Sarcoma

Name: Sarcoma: Mini Review for Clinicians, Algorithms & Cases
Creator: Dr. Haritha Chiramana
License: https://creativecommons.org/licenses/by-nc-nd/4.0/

Soft tissue · Retroperitoneal · Bone (osteosarcoma, Ewing, chondrosarcoma) · Grade · Fusions · Limb salvage · Key points for clinicians · Last updated 11 October 2026

For health professionals. This section uses clinical terms and is general education for doctors, nurses and students, not advice for an individual patient. Patients and families: please read our patient guides instead, Cancer Myth Busters · Understanding your cancer report · Living through cancer treatment, or speak with your own doctor.

Who this page is for, and where to start

Printable PDFs for this moduleMini reviews, slides, algorithms, quick references and the MCQ booklet are on the Printable Teaching Resources page · Online MCQ bank. No PDF downloads are kept on this page.

Printable Teaching Resources →Online MCQ bank →

For your patientsPlain-language Telugu–English answers for patients and families: the Sarcoma Myth Busters (36 myths), symptoms and warning signs and the Telugu handouts.

Open the sarcoma myths →

SurgeonsScreening and workup (03), local therapy with surgery types (05), algorithms (07), cases (11)

Physicians & oncologistsBiomarkers (04), systemic therapy (06), algorithms (07), survivorship (08), cases (11)

Postgraduate residentsOncology and other specialities: case vignettes (11), landmark trials (09) and 67 cited trials (12) for exams and journal clubs

Medical studentsAt a glance (01), presentation and common traps (02), the figures, and follow-up (08)

Prepared and reviewed by Dr. Haritha Chiramana, MD, DM, Senior Medical Oncologist & Hemato-Oncologist, C.R. Reddy Cancer Center, Nellore, Andhra Pradesh, India. She teaches oncology to postgraduates and medical students; colleges and departments may write to info@drharitha.co.in for teaching sessions. Printable Teaching Resources and how to cite → Phone 0861 232 5344 · WhatsApp +91 79896 42272.

01 At a glance

Sarcomas are rare: about 1% of adult cancers but roughly 1 in 7 to 1 in 10 childhood and adolescent cancers. There are more than 100 subtypes; soft tissue sarcoma outnumbers bone sarcoma about four to one. GLOBOCAN does not report soft tissue sarcoma separately, so reliable Indian figures are lacking; hospital series suggest patients here present younger and with larger tumours.
Soft tissue sarcoma (STS) arises most often in the thigh and limbs (about half), then the retroperitoneum and viscera, trunk, and head and neck. The commonest adult types are undifferentiated pleomorphic sarcoma (UPS), liposarcoma and leiomyosarcoma. Retroperitoneal STS is 10–15% of all STS and is usually about 15 cm at diagnosis.
Bone sarcoma: osteosarcoma (teenagers, around the knee; a second peak after 60, often post-Paget or post-radiation), Ewing sarcoma (children and young adults; long bones, pelvis, ribs; also soft tissue) and chondrosarcoma (adults over 40; pelvis, femur, shoulder girdle).
Outcome is decided early: the first operation and the first biopsy in the right hands give the best chance of cure and of keeping the limb. Treatment in a sarcoma reference centre (or with its input) is linked to better survival (Blay 2024^[1]).
The commonest avoidable harm in India is the unplanned excision of a lump presumed benign ("lipoma", "cyst", "fibroma") without imaging, followed by bone pain in teenagers labelled growing pains, injury, osteomyelitis or tuberculosis.

Figure 1. Sarcoma is more than 100 diseases. Soft tissue sarcomas outnumber bone sarcomas about four to one; in adults, undifferentiated pleomorphic sarcoma, liposarcoma and leiomyosarcoma lead. Proportions are approximate (WHO 2020 and hospital series).

02 Clinical presentation, common traps & genetic causes

Who is at risk

Factor	Sarcoma risk	Clinical note
Prior radiotherapy	Absolute risk low (well under 1%), but persists for decades; higher with higher dose, younger age and alkylating agents	Latency usually 7–16 years (shorter for angiosarcoma after breast RT, about 4–8 years). Commonest types: UPS, angiosarcoma, leiomyosarcoma, osteosarcoma of bone (Mery 2009^[2]).
Chronic lymphoedema	Lymphangiosarcoma (Stewart–Treves) in a long-standing swollen arm after mastectomy and axillary surgery ± RT	Purple nodules or bruise-like patches on a lymphoedematous limb need a punch biopsy.
Li-Fraumeni syndrome (germline TP53)	Very high lifetime cancer risk; sarcoma at young age	Osteosarcoma, rhabdomyosarcoma, any sarcoma under 46 with family cancers: test TP53; avoid RT where possible.
Neurofibromatosis type 1	MPNST lifetime risk about 8–13%	A plexiform neurofibroma that becomes painful, grows or hardens needs MRI ± PET and biopsy.
Hereditary retinoblastoma (RB1)	Osteosarcoma and soft tissue sarcoma, especially in irradiated fields	Lifelong vigilance for bone pain.
Other syndromes	FAP (desmoid), Werner, Rothmund–Thomson, Gorlin, DICER1, Ollier/Maffucci (chondrosarcoma), Paget disease of bone	Ask about family cancers and skin and bone signs.
Chemicals and infection	Vinyl chloride and arsenic (hepatic angiosarcoma); HHV-8 with HIV (Kaposi sarcoma)	Kaposi sarcoma is managed differently from other sarcomas.
Not causes	A single injury or fall, ordinary implants	Injury often draws attention to a tumour already present.

Figure 2. When to suspect sarcoma. A deep or large lump, a lump that grows, and persistent bone pain in a young person are imaging questions, not excision or reassurance questions. Most soft tissue lumps are benign, which is why the few sarcomas are missed.

How sarcomas present

Site	Typical story	What to do
Limb or trunk soft tissue	Painless, slowly or rapidly enlarging lump; often noticed after minor trauma; pain is uncommon until large	Ultrasound triage; MRI if >5 cm, deep, growing or painful; refer before excision
Retroperitoneum	Silent until large: fullness, early satiety, leg oedema or groin/leg pain from nerve compression; incidental CT finding	CT abdomen-pelvis and chest; testicular examination in men; core biopsy unless classic well-differentiated liposarcoma for upfront surgery
Breast, after RT	Bruise-like violet patch, nodules or thickening in the irradiated breast or chest wall years after treatment (angiosarcoma); often called a haematoma or cellulitis	Punch biopsies of the darkest area; reassess any "bruise" that persists beyond 2 weeks
Uterus, gut, other viscera	Bleeding, mass or obstruction; uterine leiomyosarcoma often found after a presumed fibroid is removed	Avoid power morcellation of fibroids when there are suspicious features
Bone (limb)	Pain for weeks to months, worse at night, then swelling and limp; pathological fracture in a few	Plain X-ray of the whole bone; MRI of the whole bone; refer before biopsy
Bone (pelvis, spine, ribs)	Deep ache, sciatica, back pain with neurological signs; large soft tissue mass at diagnosis	MRI ± CT; spinal cord compression is an emergency
Ewing sarcoma	Pain and swelling; fever, raised ESR and anaemia in 10–20%, so it is mistaken for osteomyelitis	If a "bone infection" does not settle or the X-ray shows a permeative lesion with a mass, biopsy for histology and culture

A painless lump can be malignant. Pain does not separate benign from malignant soft tissue masses; size, depth and growth do.
Lymph nodes are rarely involved (under 5%), except in clear cell sarcoma, epithelioid sarcoma, angiosarcoma, rhabdomyosarcoma and (less so) synovial sarcoma: examine the regional basin in these.
Retroperitoneal mass differential: lymphoma (widespread nodes, raised LDH), germ cell tumour (testis, AFP, β-hCG), schwannoma and paraganglioma (paraspinal or para-aortic), retroperitoneal fibrosis, Castleman disease, and primaries of kidney, adrenal or pancreas (which arise from the organ).
Osteosarcoma or osteomyelitis? Both cause pain and periosteal reaction; send biopsy material for both histology and culture, and never curette a suspected sarcoma as if it were infection.

03 Screening, workup & staging essentials

Figure 3. Image first, biopsy second, operate last. MRI before biopsy avoids post-biopsy oedema confusing the picture; the biopsy track is removed with the tumour, so its position is a surgical decision.

Imaging: what to ask for

Question	Test	Notes
Is this soft tissue lump suspicious?	Ultrasound by an experienced operator	Superficial, small, homogeneous fatty lesions can be watched; anything else goes to MRI
Extent of a limb, trunk or head and neck mass	MRI with contrast (T1, T2/STIR, fat-suppressed post-gadolinium)	Shows compartments, neurovascular bundle, bone and peritumoural oedema; do it before biopsy
Abdominal or retroperitoneal mass	Contrast CT abdomen and pelvis	Fat with thick septa or nodules = well-differentiated liposarcoma; a solid non-fatty nodule within fat = dedifferentiation; MRI if muscle, foramen or vessel involvement is unclear
Lung metastases (all patients)	CT chest	The lung holds about 80% of metastases; a chest radiograph is acceptable only for small low-grade tumours
Myxoid/round cell liposarcoma	CT abdomen-pelvis + whole-spine MRI	Spreads to soft tissue, retroperitoneum and bone marrow without lung disease; PET misses it
Angiosarcoma, leiomyosarcoma, epithelioid/clear cell sarcoma, rhabdomyosarcoma	Add CT abdomen ± nodal assessment ± brain MRI (alveolar soft part sarcoma, angiosarcoma)	Subtype-driven staging
Bone lesion	Plain X-ray in two planes → MRI of the whole bone (skip lesions) → CT for cortical detail	Recognisable fat in a bone lesion usually means benign
Bone sarcoma staging	CT chest + PET-CT (or bone scan); bone marrow biopsy in Ewing sarcoma if PET is not available	PET-CT also sets a baseline for response
Role of PET-CT in STS	Not routine	Useful for high-grade or ambiguous cases, MPNST in NF1, rhabdomyosarcoma and Ewing sarcoma

Figure 4. The biopsy decides the operation. A single longitudinal track inside the future excision (left) is removed with the tumour. A transverse cut, haematoma or distant drain (right) contaminates more tissue, enlarges the resection or RT field, and can cost a limb.

Biopsy rules: image-guided core needle biopsy with several cores is the default; incisional biopsy only by the team that will operate; never a transverse incision on a limb; no drains far from the wound; avoid FNAC as the sole test (low accuracy for subtype and grade, and a false negative delays care). Tract seeding after core biopsy is rare (TARPSWG 2021^[3]).
Pathology: diagnosis rests on morphology plus immunohistochemistry and, for many subtypes, a molecular test (FISH, RT-PCR or NGS). Ask for review by a sarcoma pathologist; discordance with the first report is common. Grade with FNCLCC (differentiation + mitoses + necrosis) on adequate tissue; grade predicts metastasis in most subtypes (Coindre 2001^[4]).
Retroperitoneal mass: percutaneous posterior (retroperitoneal) core biopsy is safe and does not raise local recurrence; open or laparoscopic biopsy is avoided. Upfront surgery without biopsy is acceptable for a classic well-differentiated liposarcoma when no preoperative therapy is planned.
Prognostic tools: AJCC 8th edition stage for limb and trunk; for individual risk use nomograms (Sarculator for extremity STS, Callegaro 2016^[5]; histology-specific retroperitoneal nomogram, Gronchi 2013^[6]). A 10-year metastasis risk of about 40% or more marks "high risk" for perioperative chemotherapy discussions.
Bone biopsy should be done at, or planned with, the centre that will operate: a poorly placed track can turn limb salvage into amputation. Specimens for Ewing sarcoma need fresh or frozen tissue for molecular confirmation.

Figure 5. Grade and size are the stage. Grade predicts metastasis better than any other single factor in most subtypes; nodal spread is rare and makes limb/trunk sarcoma stage IV. Nomograms such as Sarculator add age, subtype and site.

04 Biomarkers that change treatment

Figure 6. Four families by genetics. Translocation sarcomas affect younger people and carry diagnostic fusions; amplified MDM2/CDK4 marks well-differentiated and dedifferentiated liposarcoma; complex-karyotype sarcomas dominate in older adults; a few have one targetable driver.

Molecular testing is diagnostic first: in sarcoma the fusion or amplification usually confirms the subtype rather than selecting a drug. Use FISH or RT-PCR for a suspected fusion, or an RNA-based NGS panel that detects many fusions at once.
MDM2 amplification (FISH) separates atypical lipomatous tumour / well-differentiated liposarcoma from lipoma, and dedifferentiated liposarcoma from UPS; any "UPS" in the retroperitoneum should be tested.
NTRK fusions are rare in adult sarcoma but common in infantile fibrosarcoma; TRK inhibitors give high, durable response rates in any tumour type (Drilon 2018^[7], Doebele 2020^[8]). Screen with pan-TRK IHC and confirm with RNA NGS.
HLA-A*02 and MAGE-A4: required for afamitresgene autoleucel (engineered T cells) in synovial sarcoma and myxoid/round cell liposarcoma (SPEARHEAD-1^[9]). Not yet available in India; relevant for trial referral.
Grade, not just subtype: a few entities are not graded (angiosarcoma, epithelioid sarcoma, alveolar soft part, clear cell), and grade from a small core can under-call; the resection specimen re-grades the tumour.
PD-L1 is not a useful selector; response to checkpoint inhibitors is seen mainly in UPS, dedifferentiated liposarcoma, alveolar soft part sarcoma and cutaneous angiosarcoma (SARC028^[10], Alliance A091401^[11]).
Ewing sarcoma: EWSR1::FLI1 in about 85% and EWSR1::ERG in about 10%; fusion type does not change prognosis with modern therapy (Le Deley 2010^[12]). Round cell sarcomas with CIC or BCOR rearrangement are separate, more aggressive entities.
Osteosarcoma has no routine predictive biomarker; the strongest prognostic factor after metastasis status is histological necrosis after preoperative chemotherapy (≥90% = good response).
Chondrosarcoma: IDH1/2 mutations in most conventional central tumours (diagnostic support; IDH inhibitors in trials).

Fusion or alteration	Tumour
SS18::SSX1/2/4	Synovial sarcoma
FUS::DDIT3 (rarely EWSR1::DDIT3)	Myxoid liposarcoma
MDM2/CDK4 amplification	Well-differentiated / dedifferentiated liposarcoma
EWSR1::FLI1, EWSR1::ERG	Ewing sarcoma
CIC::DUX4, BCOR::CCNB3	Undifferentiated round cell sarcomas
PAX3/7::FOXO1	Alveolar rhabdomyosarcoma
EWSR1::WT1	Desmoplastic small round cell tumour
ASPSCR1::TFE3	Alveolar soft part sarcoma
EWSR1::ATF1	Clear cell sarcoma
COL1A1::PDGFB	Dermatofibrosarcoma protuberans (imatinib-responsive)
NAB2::STAT6	Solitary fibrous tumour
ETV6::NTRK3	Infantile fibrosarcoma
MYC amplification	Radiation-associated angiosarcoma
SMARCB1 (INI1) loss	Epithelioid sarcoma
TSC1/2 loss	PEComa

05 Local therapy: surgery & radiotherapy

Soft tissue sarcoma: surgery

Figure 7. Margins (Enneking/MSTS). A wide margin through normal tissue is the aim; fascia, periosteum and adventitia are good barriers, so a thin margin against an intact fascial plane may be adequate. Re-excise after an unplanned "shell-out".

Wide en bloc excision through normal tissue, never through the tumour or its pseudocapsule, is the cornerstone. Limb-sparing surgery with RT gives the same survival as amputation (Rosenberg 1982^[13]); amputation is now needed in under 5–10%.
Adequate margin is not one number: about 1 cm of fat or muscle, or an intact fascial plane, periosteum or vessel adventitia, is usually enough with RT. Planned close margins next to a preserved nerve or vessel are acceptable after preoperative RT.
Unplanned excision: re-image with MRI and re-excise the scar and bed; residual tumour is found in about half (Noria 1996^[14]). If re-excision would cost function, RT can secure control in many.
Surgery alone is reasonable for superficial, ≤5 cm, low-grade tumours with clear margins, and for selected small intramuscular tumours resected with a wide cuff (Yang 1998^[15]).
Lymph nodes: dissect only clinically or radiologically involved nodes; sentinel node biopsy is not routine, even in higher-risk subtypes.
Reconstruction: plan flaps with plastic surgery up front, especially after preoperative RT; vascular grafts and nerve repair are part of limb salvage.

Soft tissue sarcoma: radiotherapy

Figure 8. Timing trades early wound problems for late limb function. In the NCIC SR2 trial local control and survival were the same; preoperative RT caused more wound complications, postoperative RT more permanent fibrosis, oedema and joint stiffness. IMRT reduces both.

Question	Answer	Evidence
Does RT add to surgery?	Yes for local control in most tumours >5 cm or deep, grade 2–3; no survival gain	Yang 1998^[15], Beane 2014^[16], Pisters 1996^[17]
Before or after surgery?	Preoperative preferred for most: same control and survival, fewer permanent late effects; more wound complications	NCIC SR2^[18]
Technique	IMRT with daily image guidance; better local control and less dermatitis than 3D-conformal RT	Folkert 2014^[19]
Volume	Preoperative: tumour + about 1.5 cm radially and 3–4 cm along the muscle, including T2 oedema where feasible	RTOG 0630^[20]
Dose	Preop 50 Gy/25; postop 60 Gy (negative margin), 66 Gy (positive margin), up to 75 Gy (gross residual). No routine boost after preoperative RT with a positive margin	ASTRO 2021 guideline
Shorter courses?	Moderate hypofractionation (15 fractions) and 5-fraction schedules show promising control with acceptable wound rates; still investigational	HYPORT-STS^[21], Kalbasi 2020^[22]
Myxoid liposarcoma	Exceptionally radiosensitive; 36 Gy gave 91% extensive pathological response and no local failures in a phase 2 trial	DOREMY^[23]
Brachytherapy	Short overall time; lower local control than IMRT in series; reserved for selected cases with expertise	Pisters 1996^[17]
Definitive RT	For medically inoperable or unresectable tumours when amputation is declined	Lower control; higher doses

Retroperitoneal sarcoma

Figure 9. Retroperitoneal sarcoma is a surgical disease that is won or lost at the first operation. A compartmental, organ-inclusive resection by an experienced team gives the best local control; outcomes are better in reference centres.

Complete macroscopic resection at the first operation is the only curative treatment; R0 is rarely possible, R1 is acceptable. Extended (compartmental) resection with adherent organs improves local control in liposarcoma (Bonvalot 2009^[24]).
Preoperative RT did not improve abdominal recurrence-free survival overall in STRASS^[25]; a possible benefit in well-differentiated and low-grade dedifferentiated liposarcoma makes it an option there, decided at a sarcoma MDT. Postoperative RT is avoided (bowel falls into the bed).
Patterns of failure differ by subtype: liposarcoma recurs locally (often late), leiomyosarcoma metastasises (Gronchi 2016^[26]). Re-resection of an R2 residuum is considered when morbidity is low.

Head and neck sarcomas

Workup: MRI (with CT for bone detail) and a biopsy planned with the operating surgeon; the narrow spaces make wide margins harder than in limbs.
Soft tissue sarcomas: resect with as wide a cuff as anatomy allows; adjuvant RT for most high-grade tumours and for low-grade tumours with close or positive margins that cannot be re-excised.
Osteosarcoma of the jaw: wide en bloc resection; re-excise positive margins; RT (± chemotherapy) if margins stay positive. High-grade tumours usually get cisplatin-based chemotherapy as for limb osteosarcoma; low-grade do not.
Chondrosarcoma: often low grade (larynx, skull base); wide excision or voice-sparing partial laryngectomy; protons or carbon ions for unresectable skull-base disease.
Rhabdomyosarcoma: 35–40% of childhood primaries are in the head and neck; chemotherapy with RT is standard for parameningeal sites rather than radical surgery.
Angiosarcoma of the scalp and face (older adults): bruise-like plaques wider than they look; surgery with wide margins and RT to a generous field, taxanes for unresectable disease; checkpoint inhibitors are active.

Radiation-associated and breast sarcomas

Criteria: sarcoma in a previously irradiated field, a different histology from the first cancer, and a latency of more than a few years (at least 3; classically over 5). These sarcomas are usually high grade and carry a worse outlook, but are curable with wide resection.
Radiation-associated breast angiosarcoma: skin-led, multifocal, often wider than imaging suggests. Treatment is radical resection of all irradiated skin where possible, with reconstruction; re-irradiation (often hyperfractionated) and taxanes are used in selected cases. After breast-conserving therapy, the 10-year incidence is around 0.16% (Wiener 2023^[27]): no reason to withhold breast RT.
Primary breast sarcomas are treated like limb STS (wide excision; axillary surgery only for involved nodes). Phyllodes tumours and desmoids are separate diseases.

Bone sarcoma: surgery and local control

Figure 10. The plain X-ray is still the first and most useful bone test. Schematic only: osteosarcoma (metaphysis, bone-forming, sunburst), Ewing sarcoma (diaphysis or flat bone, permeative, onion-skin, large soft tissue mass), chondrosarcoma (adults, cartilage calcification).

Wide resection removes the tumour en bloc with its reactive zone and a cuff of normal tissue, including the biopsy tract. A microscopic margin under 1 mm raises local recurrence; positive margins are sometimes accepted in pelvis and spine.
Limb salvage is possible in most extremity bone sarcomas after preoperative chemotherapy; survival equals amputation when margins are adequate. Response to chemotherapy and margin both predict local recurrence (Bielack 1996^[28]).
Ewing sarcoma local control: surgery when an adequate margin is achievable with acceptable function; definitive RT (about 55 Gy) when the tumour is unresectable or resection would be mutilating (spine, much of the pelvis, skull base). Postoperative RT for positive margins, gross residual disease or high-risk chest wall tumours. Isolated lung metastases: whole-lung RT; solitary bone metastases can also be treated locally.
Osteosarcoma is relatively radioresistant: RT only for unresectable or incompletely resected tumours (high dose; protons or carbon ions where available).
Chondrosarcoma: surgery is the only effective treatment. Grade 1 limb lesions (atypical cartilaginous tumour): intralesional curettage with adjuvant (cement, phenol, cryotherapy); grade 2–3, pelvic and axial tumours: wide resection. Skull base and spine: high-dose particle RT after surgery.
Enneking/MSTS staging (grade, compartment, metastasis) still guides surgical planning (Enneking 1986^[29]).

Figure 11. Reconstruction is chosen for durability, age and function. The oncological goal (a wide margin) comes first; the reconstruction is planned around it, never the other way round.

06 Systemic therapy: indications & options

Soft tissue sarcoma: chemotherapy and immunotherapy around surgery

Paediatric-type sarcomas (rhabdomyosarcoma, Ewing sarcoma of soft tissue, extraskeletal osteosarcoma) always receive chemotherapy as part of a protocol.
Adult-type STS: perioperative chemotherapy is controversial; offer it only to fit patients with high-risk tumours (>5 cm, deep, grade 2–3, ideally chemosensitive types such as synovial sarcoma, myxoid/round cell liposarcoma, UPS, high-grade myxofibrosarcoma), after shared decision-making.
Evidence: the meta-analysis of 18 trials showed fewer recurrences and an 11% absolute survival gain with doxorubicin + ifosfamide (Pervaiz 2008^[30]); the largest single trial was negative (EORTC 62931^[31]; pooled analysis^[32]), partly because it included small, low-grade and non-limb tumours. Three cycles of epirubicin + ifosfamide were as good as five (Gronchi 2016^[33]), and beat "histotype-tailored" regimens (ISG-STS 1001^[34], final report^[35]), except trabectedin in high-grade myxoid liposarcoma.
Sequence: if given, 3 cycles before surgery (often before or alongside RT) allow response assessment and may ease limb salvage; postoperative chemotherapy is an alternative when surgery came first.
Immunotherapy: in stage III limb UPS (and dedifferentiated/pleomorphic liposarcoma), adding pembrolizumab before, during and after preoperative RT and surgery improved 2-year disease-free survival (67 vs 52%; SU2C-SARC032^[36]). Overall survival is not yet known and grade ≥3 toxicity rose (56 vs 31%); offer after shared decision-making where access allows.
Regional approaches (isolated limb perfusion with TNF-α and melphalan, regional hyperthermia with chemotherapy) can save limbs in selected locally advanced tumours at specialised centres; rarely available in India.

Advanced or metastatic soft tissue sarcoma

Figure 12. Histology chooses the first drug. Anthracyclines remain the backbone; combinations raise response but not clearly survival (EORTC 62012), except doxorubicin–trabectedin in leiomyosarcoma (LMS-04). No doses are given here.

When to start: metastatic STS is, with few exceptions, incurable; start systemic therapy for symptoms, substantial burden or clear progression. Slow, low-volume disease (especially well-differentiated liposarcoma, some solitary fibrous tumours) may be watched with scans.
First line: doxorubicin alone remains the reference. Adding ifosfamide doubled response (26 vs 14%) and lengthened PFS (7.4 vs 4.6 months) without a significant survival gain (EORTC 62012^[37]): use the combination when shrinkage is the goal (symptoms, borderline resectable). Gemcitabine–docetaxel was not better and was more toxic (GeDDiS^[38]). Olaratumab was positive in phase 2 but negative in phase 3 (Tap 2016^[39]): a lesson in confirming phase 2 signals.
Leiomyosarcoma: doxorubicin + trabectedin then trabectedin maintenance improved PFS (12 vs 6 months) and overall survival (33 vs 24 months) but grade ≥3 toxicity was 97% (LMS-04^[40], LMS-04 OS^[41]); doxorubicin + dacarbazine is an alternative.
Angiosarcoma: weekly paclitaxel first for cutaneous, scalp and face disease (ANGIOTAX^[42]); doxorubicin and paclitaxel have similar activity (Italiano 2012^[43]). Checkpoint inhibitors work particularly in cutaneous head and neck angiosarcoma.
PEComa: mTOR inhibition (nab-sirolimus, AMPECT^[44]; sirolimus or everolimus where unavailable).
Later lines: pazopanib (non-adipocytic STS; PFS 4.6 vs 1.6 months, no OS gain; PALETTE^[45]), trabectedin (L-type sarcomas; Demetri 2016^[46], T-SAR^[47]), eribulin (overall survival gain in liposarcoma; Schöffski 2016^[48]), gemcitabine–docetaxel (SARC 002^[49]), CDK4/6 inhibitor for indolent dedifferentiated liposarcoma (Dickson 2016^[50]), checkpoint inhibitors for UPS and selected others.

Figure 13. After the first line, the subtype map matters even more. Trial enrolment is preferred at every step; pazopanib is not used for adipocytic sarcomas, and responses to later lines are modest, so quality of life leads the decision.

Uncommon subtypes that behave differently

Subtype	Who and where	Key point
Alveolar soft part sarcoma (ASPSCR1::TFE3)	Adolescents and young adults, more often women; thigh, head and neck; brain metastases	Indolent: observe limited stable disease; atezolizumab (Chen 2023^[51]) or pembrolizumab if progressing; pembrolizumab + axitinib if bulky or symptomatic (Wilky 2019^[52]); brain MRI at staging
Epithelioid sarcoma (SMARCB1/INI1 loss)	Young adults; distal (hand, forearm) or proximal type	Nodal spread; mimics granuloma or ulcer; anthracycline first if unresectable; tazemetostat (EZH2 inhibitor) where approved
Clear cell sarcoma (EWSR1::ATF1)	Young adults; tendons and aponeuroses of foot and ankle	Melanoma-like (S100, HMB45) but no BRAF; nodal spread; chemotherapy rarely works: trials
Extraskeletal myxoid chondrosarcoma (NR4A3 fusion)	Middle-aged men; thigh	Indolent; resect primary; observe limited metastases; VEGFR TKIs (sunitinib, pazopanib) if progressing
Epithelioid haemangioendothelioma (WWTR1::CAMTA1)	Liver, lung, bone; any age	Often multifocal and slow; surveillance first; systemic therapy only for progression or symptoms
Inflammatory myofibroblastic tumour (ALK fusion in about half)	Children and young adults; lung, abdomen	Resect; ALK inhibitors (crizotinib) for unresectable ALK-positive disease
Desmoplastic small round cell tumour (EWSR1::WT1)	Adolescent and young men; abdominal and pelvic peritoneum	Ewing-type chemotherapy, debulking surgery and whole-abdomen RT in selected; poor prognosis

Local treatment of metastases

Figure 14. Oligometastatic sarcoma can still be cured. Selection, not surgery alone, explains much of the benefit; there is no randomised trial, and adjuvant chemotherapy after metastasectomy is unproven for adult-type sarcomas.

Pulmonary metastasectomy for selected patients: complete resection possible, few nodules, long disease-free interval, controlled primary, no extrathoracic disease. Five-year survival after resection is about 30–40% in series (Chudgar 2017^[53]); repeat resection is reasonable for isolated lung recurrence (Weiser 2000^[54]).
Alternatives: SBRT gives high local control of lung metastases (Dhakal 2012^[55]); radiofrequency ablation, cryoablation; liver resection for isolated leiomyosarcoma metastases.
No routine chemotherapy after complete metastasectomy for adult-type STS outside trials; a 6–8-week rescan or brief chemotherapy can be used to test the tempo of disease before surgery. After resection, chest CT about every 4 months; repeat CT about 6 weeks after a suspected recurrence before re-operating, as more nodules often declare themselves.

Bone sarcoma: chemotherapy

Figure 15. Three bone sarcomas, three strategies. Osteosarcoma and Ewing sarcoma are systemic diseases at diagnosis (micrometastases) and need chemotherapy around local treatment; conventional chondrosarcoma is cured, if at all, by surgery.

Osteosarcoma (high-grade): chemotherapy before and after surgery raised long-term survival from under 20% to about 65–70% for localised disease (MIOS 1986^[56]). Standard up to age 40: MAP (high-dose methotrexate, doxorubicin, cisplatin), 10 weeks before surgery and continued from 1 week after surgery to complete about 29 weeks. Preoperative and postoperative timing give similar survival; preoperative chemotherapy is preferred because it eases limb salvage. Age 40 and over: doxorubicin–cisplatin alone is usual (benefit of high-dose methotrexate unproven). Where methotrexate cannot be monitored safely, carboplatin–ifosfamide–doxorubicin is an alternative (more second leukaemias).
Poor responders (necrosis under 90%): changing postoperative chemotherapy does not help; adding ifosfamide–etoposide only added toxicity (EURAMOS-1^[57]), and interferon maintenance for good responders was also negative (EURAMOS-1 good response^[58]). Zoledronate added nothing (OS2006^[59]). Mifamurtide with MAP is used where licensed (INT-0133^[60]); it is not available in India.
No adjuvant RT after complete resection of osteosarcoma; RT is for incomplete resection, inoperable sites or palliation. Metastatic at diagnosis: same chemotherapy plus resection of all sites; up to about half with isolated lung metastases can be long-term survivors.
Osteosarcoma subtypes: low-grade central and parosteal osteosarcoma need surgery alone; periosteal is intermediate (chemotherapy debated).
Ewing sarcoma: adding ifosfamide and etoposide to VDC improved 5-year event-free survival in localised disease (69 vs 54%; INT-0091^[61]). Giving cycles every 14 instead of 21 days (with growth factor) improved 10-year EFS (70 vs 61%) and OS (76 vs 69%) without more toxicity (AEWS0031^[62]), whereas higher doses per cycle did not help (Granowetter 2009^[63]) and adding vincristine–topotecan–cyclophosphamide did not either (AEWS1031^[64]). VDC/IE beat VIDE (3-year EFS 67 vs 61%, OS 82 vs 74%; Euro Ewing 2012^[65]).
Ewing sequence: 12 weeks of VDC/IE (every 14 days under 18; every 14 or 21 days from 18) → local control → chemotherapy to a total of 14–17 cycles. If RT is the local treatment, chemotherapy continues during RT with doxorubicin omitted. Adults should receive the same protocol at full intensity.
Metastatic Ewing sarcoma: lung-only disease has a better outlook (whole-lung RT after chemotherapy); bone or marrow metastases fare poorly; high-dose busulfan–melphalan is used in some protocols.
Relapsed bone sarcoma: resect lung metastases where possible (still curative in some osteosarcomas); chemotherapy options include ifosfamide-based, irinotecan–temozolomide and topotecan–cyclophosphamide (Ewing), and multitarget TKIs in osteosarcoma (REGOBONE^[66], CABONE^[67]); trials preferred. Relapse more than a year after treatment with a few resectable lung nodules can still be cured by surgery.
Chondrosarcoma: conventional chondrosarcoma is chemoresistant; mesenchymal chondrosarcoma is treated like Ewing sarcoma and dedifferentiated like osteosarcoma.

Quick reference: tests, treatment by setting, drugs by subtype and side effects

Table A. Subtype tests and what they change

Subtype	Key IHC	Molecular test	What it changes
Well-differentiated / dedifferentiated liposarcoma	MDM2, CDK4 (nuclear)	MDM2 amplification (FISH)	Separates atypical lipomatous tumour from lipoma; DD liposarcoma: CDK4/6 inhibitor option later; retroperitoneal follow-up for life
Myxoid liposarcoma	DDIT3 (some labs)	FUS::DDIT3 or EWSR1::DDIT3	Very radiosensitive (36 Gy studied in DOREMY); spine MRI and CT abdomen for extrapulmonary spread; trabectedin works
Synovial sarcoma	TLE1, SS18-SSX fusion-specific antibody	SS18::SSX1/2/4	Chemosensitive (ifosfamide); afami-cel if HLA-A*02 and MAGE-A4 positive; may arise anywhere, at any age
Leiomyosarcoma	Desmin, SMA, h-caldesmon	Complex karyotype (no single test)	Doxorubicin + trabectedin first line if fit; scan liver as well as lung
Undifferentiated pleomorphic sarcoma	Diagnosis of exclusion (panel negative)	Exclude dedifferentiated liposarcoma (MDM2), melanoma, carcinoma	Most immunotherapy-responsive common STS; neoadjuvant pembrolizumab + RT option in stage III limb UPS
Angiosarcoma	CD31, ERG, CD34	MYC amplification (radiation-associated)	MYC helps separate post-RT angiosarcoma from atypical vascular lesion; taxane first; immunotherapy for scalp/face
MPNST	Loss of H3K27me3; S100/SOX10 patchy	NF1 (germline in half)	Genetics referral; poorly chemosensitive; pazopanib later
Ewing sarcoma	CD99 (membranous), NKX2.2	EWSR1::FLI1 (~85%) or ::ERG; FISH or RT-PCR/NGS	Paediatric-type chemotherapy at any age; CIC- and BCOR-rearranged sarcomas are now separate entities
Rhabdomyosarcoma	Desmin, myogenin, MyoD1	PAX3/7::FOXO1 (alveolar)	Fusion-positive = higher risk; multimodality protocol with chemotherapy
Osteosarcoma	SATB2 (osteoid matrix on H&E)	Complex karyotype; MDM2 in low-grade central and parosteal types	Low-grade parosteal: surgery alone; conventional high-grade: MAP chemotherapy
Chondrosarcoma	S100	IDH1/2 mutation (most conventional)	Surgery; IDH inhibitors in trials; dedifferentiated: osteosarcoma-style chemotherapy
PEComa	HMB45, melan-A + SMA/desmin	TSC1/2 loss; TFE3 fusion subset	mTOR inhibitor (nab-sirolimus) for advanced disease
Any advanced sarcoma, especially infantile fibrosarcoma, young adults	pan-TRK	NTRK1–3 fusions (RNA NGS)	Larotrectinib or entrectinib: high and durable response rates
GIST and desmoid (separate diseases)	KIT/DOG1; nuclear β-catenin	KIT/PDGFRA; CTNNB1/APC	Not treated like sarcoma: imatinib for GIST; observation first for desmoid

Table B. Treatment by setting (no doses)

Setting	Standard	Alternatives / notes	Evidence
Limb/trunk STS, superficial, ≤5 cm, low grade	Wide excision alone	Re-excise if margin positive	NCI 1998^[15]
Limb/trunk STS, >5 cm or deep, grade 2–3	Preoperative RT 50 Gy/25 → wide excision 4–6 weeks later	Postoperative RT (60–66 Gy) if surgery first; IMRT preferred	NCIC SR2^[18], Folkert 2014^[19]
Stage III limb UPS (or DD/pleomorphic liposarcoma)	Preoperative RT + pembrolizumab → surgery → adjuvant pembrolizumab (shared decision)	Survival data immature; not tested with chemotherapy	SU2C-SARC032^[36]
High-risk limb/trunk STS (large, deep, grade 3, chemosensitive type)	Consider 3 cycles of anthracycline + ifosfamide (neoadjuvant or adjuvant), fit patients	Benefit modest and uncertain; synovial and myxoid LPS most responsive	ISG-STS 1001^[34], Pervaiz 2008^[30], EORTC 62931^[31]
Myxoid liposarcoma, preoperative	RT 50 Gy (36 Gy de-escalation in trials)	Very radiosensitive	DOREMY^[23]
Retroperitoneal sarcoma, resectable	Complete en bloc resection in a reference centre	Preoperative RT only for selected WD / low-grade DD liposarcoma; no routine adjuvant therapy	STRASS^[25], TARPSWG 2021^[3]
Unplanned excision ("whoops")	MRI then re-excision of the scar and bed (± RT)	Residual tumour found in about half	Noria 1996^[14]
Oligometastatic lung disease	Metastasectomy (VATS) if all disease removable and interval long	SBRT or ablation if unfit	Chudgar 2017^[53], Dhakal 2012^[55]
Metastatic STS, first line	Doxorubicin (single agent if palliation is the goal; + ifosfamide if a response is needed)	LMS: doxorubicin + trabectedin; angiosarcoma: paclitaxel; PEComa: mTOR; NTRK: TRK inhibitor	EORTC 62012^[37], LMS-04^[41], ANGIOTAX^[42]
Osteosarcoma, localised (high grade)	Age <40: MAP 10 weeks → wide resection → MAP to 29 weeks; ≥40: doxorubicin–cisplatin	Poor necrosis: no change of regimen; no adjuvant RT after complete resection	MIOS^[56], EURAMOS-1^[57]
Ewing sarcoma, localised	VDC/IE every 14 days (<18; 14 or 21 days ≥18) × 12 weeks → surgery or RT → 14–17 cycles in total	RT with chemotherapy (no doxorubicin during RT); adults: same protocol at full intensity	INT-0091^[61], AEWS0031^[62], Euro Ewing 2012^[65]
Conventional chondrosarcoma	Surgery (curettage for grade 1 limb; wide resection otherwise)	RT for unresectable skull base/axial (high dose, often protons)	ESMO–EURACAN–GENTURIS

Table C. Drugs by subtype in advanced soft tissue sarcoma (no doses)

Subtype	First line	Later lines	Avoid / note
Most anthracycline-sensitive types (UPS, synovial, pleomorphic LPS, myxofibrosarcoma)	Doxorubicin ± ifosfamide	Gemcitabine–docetaxel; pazopanib; trabectedin; immunotherapy (UPS)	Combination only when a response is needed (more toxicity, no clear OS gain)
Leiomyosarcoma (uterine and non-uterine)	Doxorubicin + trabectedin, or doxorubicin + dacarbazine	Gemcitabine–docetaxel, trabectedin, pazopanib, eribulin	Check liver as well as lung on scans
Liposarcoma, dedifferentiated/pleomorphic	Doxorubicin	Gemcitabine–docetaxel → eribulin; CDK4/6 inhibitor if indolent	No pazopanib in adipocytic sarcoma
Liposarcoma, myxoid/round cell	Doxorubicin (± ifosfamide)	Trabectedin; eribulin; afami-cel if eligible	Image spine and abdomen
Synovial sarcoma	Doxorubicin ± ifosfamide	Ifosfamide; pazopanib; trabectedin; afami-cel	HLA-A*02 typing and MAGE-A4 IHC to check cell-therapy eligibility
Angiosarcoma	Weekly paclitaxel (cutaneous/scalp); taxane or doxorubicin (visceral)	Switch class; gemcitabine; pazopanib; checkpoint inhibitors	Radiation-associated breast angiosarcoma: surgery is the main treatment when localised
MPNST	Doxorubicin + ifosfamide	Pazopanib	NF1 genetics; low response rates
PEComa	nab-sirolimus (or sirolimus/everolimus)	Chemotherapy has little activity	Hyperglycaemia, stomatitis, pneumonitis
NTRK fusion-positive (any)	Larotrectinib or entrectinib	Repotrectinib for resistance	Test with RNA NGS where possible
Alveolar soft part sarcoma	Observe if limited and stable; atezolizumab or pembrolizumab if progressing; + axitinib if bulky	Pazopanib, sunitinib	Chemotherapy ineffective; brain MRI

Table D. Managing common side effects of sarcoma drugs

Drug	Main problems	Check / prevent	Act on
Doxorubicin	Cardiomyopathy (cumulative), mucositis, alopecia, myelosuppression, extravasation injury	Echo or MUGA before; track lifetime dose; central line if vesicant risk	Breathlessness, oedema, falling ejection fraction: stop; cardiology
Ifosfamide	Encephalopathy, haemorrhagic cystitis, proximal tubulopathy (Fanconi), myelosuppression	Mesna, hydration, urine for blood; renal function, phosphate, bicarbonate	Confusion or drowsiness: stop infusion; methylene blue per protocol
Trabectedin	Transaminitis, neutropenia, rhabdomyolysis, fatigue	Central line; dexamethasone premedication; LFTs and CK each cycle	Rising CK or bilirubin: delay or reduce
Gemcitabine–docetaxel	Myelosuppression, fluid retention, pneumonitis, nail changes	Growth-factor support; steroid premedication for docetaxel	New cough or breathlessness: exclude pneumonitis
Pazopanib	Hepatotoxicity, hypertension, diarrhoea, hair depigmentation, pneumothorax with lung metastases	LFTs at 3, 5, 7, 9 weeks then monthly; BP; caution with many lung metastases	ALT >3× ULN: interrupt
Eribulin, paclitaxel	Neuropathy, neutropenia	Ask about numbness every cycle	Grade 2 neuropathy: delay/reduce
Pembrolizumab, nivolumab–ipilimumab	Immune-related colitis, hepatitis, pneumonitis, endocrine	TSH, cortisol, LFTs; patient alert card	Steroids by grade; hold drug
Afamitresgene autoleucel	Cytokine release syndrome, cytopenias, (rarely) neurotoxicity	Lymphodepletion in a cell-therapy centre	Fever after infusion: CRS protocol (tocilizumab)
High-dose methotrexate (osteosarcoma)	Acute kidney injury, mucositis, hepatitis	Hydration, urine alkalinisation, levels, leucovorin rescue; avoid NSAIDs, PPIs, co-trimoxazole	Delayed clearance: glucarpidase
Cisplatin (osteosarcoma)	Ototoxicity, nephrotoxicity, emesis	Audiometry; magnesium	Hearing loss: discuss modification
Cyclophosphamide, ifosfamide, etoposide (Ewing)	Infertility, second leukaemia, cystitis	Sperm banking or ovarian protection before treatment	Long-term survivorship clinic

07 Management algorithms

These decision paths pull together sections 02–06. Colours: teal for favourable paths, purple for intermediate, rose for high-risk paths.

Algorithm 1Soft tissue mass of the limb or trunk

Lump >5 cm, deep, growing, painful or recurrent → ultrasound → MRI with contrast → core needle biopsy after MRI, track planned with the surgeon → sarcoma pathologist (subtype, FNCLCC grade, molecular test) → CT chest → sarcoma MDT

Low risk

Superficial, ≤5 cm, low grade → wide excision alone

Atypical lipomatous tumour (limb) → marginal excision is acceptable

Positive margin → re-excision; RT only if re-excision would cost function

Deep or >5 cm, grade 2–3

Preoperative IMRT 50 Gy/25 → wide excision 4–6 weeks later

Stage III UPS → consider pembrolizumab with RT and after surgery

High-risk, chemosensitive, fit → consider 3 cycles anthracycline + ifosfamide

Infiltrative myxofibrosarcoma or wound-risk sites → surgery first, postoperative RT 60–66 Gy

Special situations

Unplanned excision elsewhere → MRI → re-excision of scar and bed ± RT

Unresectable without amputation → chemotherapy/RT first; amputation if no functional limb can be saved

Inoperable → definitive RT

Paediatric-type sarcoma (RMS, Ewing): protocol chemotherapy at any age

All patients: no excision before imaging · no FNAC-only diagnosis · plan flaps up front · physiotherapy and lymphoedema care · fertility counselling before chemotherapy · follow-up by stage (Figure in section 08).

Algorithm 2Retroperitoneal mass

Retroperitoneal mass: CT chest-abdomen-pelvis · testicular examination, AFP, β-hCG, LDH if germ cell or lymphoma possible · is it extravisceral and unifocal? → sarcoma likely → percutaneous posterior core biopsy (unless classic WD liposarcoma for upfront surgery) → reference-centre MDT

Resectable

Complete en bloc resection with adherent organs (R0/R1)

WD or low-grade DD liposarcoma → preoperative RT 50 Gy is an option (shared decision)

No routine postoperative RT or chemotherapy; surveillance

Borderline resectable

Refer to a high-volume sarcoma centre

Chemotherapy (chemosensitive high-grade types) or RT to downstage; trial

Never enucleate, morcellate or "debulk" at the first operation

Unresectable or metastatic

Indolent WD liposarcoma, asymptomatic → observe

Symptomatic or high grade → systemic therapy by subtype

Palliative resection or RT for symptoms

R2 after surgery elsewhere → re-resection if low morbidity, otherwise surveillance

Scan for life in liposarcoma (late local relapse; dedifferentiation can appear years later) · chest and liver imaging in leiomyosarcoma · check renal function before nephrectomy.

Algorithm 3Metastatic soft tissue sarcoma

Metastatic STS: confirm subtype (expert pathology, molecular test, NTRK if relevant) · count and site of metastases · performance status · goals of care · trial?

Oligometastatic

Lung only, few nodules, long interval, primary controlled → metastasectomy (VATS) or SBRT

Short interval or uncertain tempo → rescan in 6–8 weeks or chemotherapy first

No routine adjuvant chemotherapy after metastasectomy

Needs systemic therapy

Most types → doxorubicin (± ifosfamide if response needed)

LMS → doxorubicin + trabectedin / dacarbazine

Angiosarcoma → weekly paclitaxel

PEComa → mTOR · NTRK → TRK inhibitor

Second line by subtype: gem–docetaxel, trabectedin, eribulin (liposarcoma), pazopanib (not adipocytic), immunotherapy (UPS)

Indolent or frail

Asymptomatic, slow → observe with scans

Frail → single agent (doxorubicin, or oral options) or best supportive care

Palliative RT for pain, bleeding or cord compression

All patients: cumulative anthracycline dose and echo · fertility · VTE awareness · early palliative care · trial referral at every progression.

Algorithm 4Suspected bone sarcoma

Persistent bone pain, swelling or aggressive X-ray → MRI whole bone · CT chest · PET-CT or bone scan → biopsy at the treating centre (core, track excisable) → histology + molecular (EWSR1) + culture if infection possible

Osteosarcoma

High grade, <40 y → MAP 10 weeks (≥40: doxorubicin–cisplatin)

Wide resection / limb salvage → necrosis assessed

Same chemotherapy to 29 weeks; no change for poor response

Lung metastases: resect all if possible, with chemotherapy

Ewing sarcoma

VDC/IE every 14 days (<18 y; 14 or 21 days if ≥18) × 12 weeks

Adequate margin possible → surgery (RT if margin positive or chest wall high risk)

Unresectable or mutilating → definitive RT with chemotherapy

Complete 14–17 cycles in total

Lung metastases: whole-lung RT; bone/marrow metastases: protocol or trial

Chondrosarcoma

Grade 1, limb → curettage + adjuvant

Grade 2–3, pelvis, axial → wide resection

Dedifferentiated → osteosarcoma-type chemotherapy; mesenchymal → Ewing-type

All patients: no curettage of a suspected sarcoma as "infection" · fertility preservation · audiometry and echo · TP53 testing if young with family cancers · rehabilitation and school or work support.

08 Survivorship, follow-up & reducing recurrence

Figure 16. Surveillance is front-loaded because most relapses occur in the first 2–3 years; the aim is to catch lung metastases and local relapses while still resectable. Intervals are approximate (UpToDate, ESMO, NCCN); MRI is preferred for the primary site.

Follow-up protocol (UpToDate, ESMO, NCCN; adapt to resources)

Group	Visits and imaging	Notes
Stage I STS (limb/trunk)	History and examination every 3–6 months for 2 years, then yearly; chest imaging periodically	Patients should report a new lump in or near the scar
Stage II–III STS	Examination and chest CT every 3–6 months for 2–3 years, then 6-monthly to 5 years, then yearly	Most relapses occur within 2–3 years
Positive margins or hard-to-examine sites	MRI of the primary site about 6-monthly for 2 years, then yearly to 5 years	MRI preferred to CT (sensitivity, no radiation)
Retroperitoneal sarcoma	CT abdomen-pelvis and chest 3–6-monthly for 2–3 years, then 6–12-monthly; beyond 10 years for liposarcoma	Liposarcoma recurs late; leiomyosarcoma metastasises early
Bone sarcoma	Clinic, X-ray of the primary and chest CT every 3 months for 2 years, 4–6-monthly to year 5, then yearly to year 10	Prosthesis surveillance; late relapses in Ewing sarcoma

Late effects: anthracycline cardiomyopathy (echo at the end of treatment and periodically), ifosfamide and cisplatin kidney damage (tubular loss of phosphate and magnesium), hearing loss after cisplatin, infertility and early menopause after alkylators, second cancers (therapy-related leukaemia, sarcoma in RT fields), and RT fibrosis, oedema, fracture and growth disturbance.
Function: physiotherapy from day one after limb surgery; lymphoedema care; prosthetic and orthotic support; return-to-school and work plans. Many young survivors walk, run and play sport.
Reducing risk: no tobacco; maintain weight and activity; avoid unnecessary CT in young survivors; genetic counselling for TP53, NF1 and RB1 families (cascade testing).
Psychosocial: fear of recurrence, body image after amputation or rotationplasty, and financial toxicity (long treatment away from home) are common; involve social workers early.

09 Landmark trials

Figure 17. How to read a survival curve (illustrative). Use the absolute gap at a fixed time and overall survival, not the median or PFS alone, when weighing benefit against toxicity and cost.

NCI (Rosenberg 1982)^[13]: amputation vs limb-sparing surgery + RT → same survival → limb salvage became standard.
NCI (Yang 1998)^[15] and MSKCC (Pisters 1996)^[17]: RT after limb-sparing surgery → better local control, no survival difference → RT for most large, deep, high-grade tumours.
NCIC SR2^[18]: preoperative vs postoperative RT → equal local control and survival; wound complications 35 vs 17%, late fibrosis lower preoperatively → preoperative RT for most.
RTOG 0630^[20]: image-guided preoperative RT to reduced volumes → few marginal failures and late grade ≥2 toxicity about 10% → smaller margins are safe.
STRASS^[25]: preoperative RT + surgery vs surgery for retroperitoneal sarcoma → no overall gain; possible benefit in liposarcoma → not routine.
Pervaiz 2008^[30] vs EORTC 62931^[31]: meta-analysis suggests a survival benefit from doxorubicin + ifosfamide; the largest trial was negative → individualised, high-risk-only use.
ISG-STS 1001^[34]: 3 cycles of epirubicin + ifosfamide beat histotype-tailored regimens in high-risk STS → standard regimen when chemotherapy is used.
SU2C-SARC032^[36]: pembrolizumab with preoperative RT and surgery in stage III limb UPS/liposarcoma → 2-year DFS 67 vs 52% → first immunotherapy for localised sarcoma; OS awaited.
EORTC 62012^[37]: doxorubicin ± ifosfamide first line → higher response and PFS, no significant OS gain → single-agent doxorubicin when palliation is the goal.
LMS-04^[40]: doxorubicin + trabectedin in leiomyosarcoma → PFS and OS gains → new first-line standard for fit patients.
PALETTE^[45], eribulin trial^[48], trabectedin trial^[46]: modest later-line gains; histology decides which.
Larotrectinib (2018)^[7]: tumour-agnostic TRK inhibition → high durable responses → test for NTRK fusions.
MIOS (Link 1986)^[56]: adjuvant chemotherapy vs observation after surgery for osteosarcoma → relapse-free survival about 65 vs 17% → chemotherapy is standard.
EURAMOS-1^[57]: adding ifosfamide–etoposide for poor responders → no gain, more toxicity → MAP throughout.
INT-0091^[61]: VDC ± IE in Ewing sarcoma → 5-year EFS 69 vs 54% in localised disease → VDC/IE backbone.
AEWS0031^[62]: VDC/IE every 14 vs 21 days → 10-year EFS 70 vs 61%, OS 76 vs 69%, no extra toxicity → interval compression.
Euro Ewing 2012^[65]: VDC/IE vs VIDE → 3-year EFS 67 vs 61%, OS 82 vs 74%, less febrile neutropenia → one international standard.

10 Practice pearls & pitfalls

Any lump larger than a golf ball, deep to the fascia or growing deserves an MRI before a knife.
Do not shell out a "lipoma" in a minor theatre: a well-differentiated liposarcoma in the thigh can be indistinguishable to the hand, and an unplanned excision makes the definitive operation and RT field larger.
Biopsy after MRI, with a core needle, along the line of the future incision; tell the radiologist where the surgeon will cut.
A benign FNAC report does not exclude sarcoma.
Ask for a second opinion from a sarcoma pathologist and a molecular test when the subtype will change treatment; misdiagnosis is common outside reference centres.
Preoperative RT means more early wound problems but better long-term function; warn the patient and involve plastic surgery.
Myxoid liposarcoma behaves unlike other sarcomas: very radiosensitive, metastasises to spine, retroperitoneum and soft tissue, and responds to trabectedin. Image the spine.
In the retroperitoneum, the first surgeon has the best chance: refer before laparotomy, never enucleate.
A bruise that will not fade on an irradiated breast is angiosarcoma until a punch biopsy says otherwise.
Doxorubicin alone is a reasonable first line when the aim is palliation; reserve combinations for when a response is needed.
Pazopanib is not for liposarcoma; eribulin is.
Night pain in a teenager is not growing pains. X-ray the whole bone.
Fever, raised ESR and a bone lesion can be Ewing sarcoma: send biopsy for culture and histology together.
In osteosarcoma, response is judged on the resection specimen (necrosis), not on how much the mass shrinks.
Adults with Ewing sarcoma or osteosarcoma should receive paediatric-style protocols in experienced units; under-dosing is a common cause of failure.
Bank sperm or consider ovarian protection before alkylators, cisplatin or pelvic RT; it is often forgotten in the rush to start.
In India, long treatment far from home drives abandonment: plan travel, lodging and financial support (PM-JAY, state schemes) at diagnosis.

11 Case vignettes: lines of management

Eight cases, written for postgraduates and practising clinicians. Read the presentation, decide on diagnosis, workup and plan, then open the line of management. No doses are given.

Case 1Unplanned excision · thigh · UPS

A "lipoma" removed in a minor theatre

52 years, manThigh, deep, 8 cmMargins involved

A 52-year-old shopkeeper had an 8 cm painless thigh lump excised under local anaesthesia at a nursing home as a "lipoma". No imaging was done. Histology: high-grade pleomorphic sarcoma, margins involved. A drain was brought out 10 cm away.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Restage
MRI of the thigh (residual mass and the contaminated field, including the drain site) and CT chest: no metastases.
Expert pathology
Review with IHC and MDM2 FISH (negative): undifferentiated pleomorphic sarcoma, FNCLCC grade 3.
Plan
Preoperative IMRT 50 Gy to the tumour bed, scar and drain track (larger field than the original tumour would have needed); pembrolizumab with RT and after surgery discussed as for stage III UPS.
Surgery
Re-excision of the scar, drain tract and bed with plastic surgical closure 4–6 weeks after RT; residual tumour found; margins clear.
Follow-up
Clinic and chest CT 3–6-monthly; MRI of the thigh 6-monthly for 2 years.

Teaching points

Deep or >5 cm lumps need MRI before any excision.
An unplanned excision enlarges the definitive surgery and RT field.
The drain site and scar are contaminated and must be treated.

See: Sections 02, 03, 05 · Algorithm 1 · Noria 1996^[14], NCIC SR2^[18], SU2C-SARC032^[36]

Case 2Retroperitoneal liposarcoma

Abdominal fullness in a 58-year-old woman

58 years, woman24 cm fatty massSolid nodule

A 58-year-old woman has 6 months of abdominal fullness and early satiety. CT: a 24 cm predominantly fatty left retroperitoneal mass displacing the kidney and colon, with a 5 cm solid enhancing nodule in its lower part. No metastases on chest CT.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Recognise
Fat with a solid nodule = well-differentiated liposarcoma with a dedifferentiated component.
Biopsy
Percutaneous posterior core biopsy of the solid nodule: dedifferentiated liposarcoma, MDM2 amplified.
MDT at a reference centre
Complete en bloc resection including the left kidney, descending colon and psoas fascia; preoperative RT not offered because the dominant risk is the high-grade component (STRASS showed no overall gain).
After surgery
R1 resection; no adjuvant therapy; CT every 3–6 months for 3 years, then 6–12-monthly for more than 10 years.

Teaching points

Image-guided core biopsy of a retroperitoneal mass is safe.
The first operation decides local control; organ-inclusive resection is standard.
Liposarcoma recurs locally and late: long follow-up.

See: Sections 03, 05 · Algorithm 2 · STRASS^[25], Bonvalot 2009^[24], Gronchi 2013^[6]

Case 3Myxoid liposarcoma · radiosensitive

A soft thigh swelling in a 34-year-old

34 years, manPosterior thigh, 12 cmFUS::DDIT3

A 34-year-old man has a 12 cm soft, deep posterior thigh mass. MRI: well-defined, T2-bright, lobulated, little fat. Core biopsy: myxoid liposarcoma (FUS::DDIT3 fusion), about 10% round cell component.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Stage by subtype
CT chest, CT abdomen-pelvis and whole-spine MRI (myxoid liposarcoma spreads to bone marrow, retroperitoneum and soft tissue): all clear.
Local therapy
Preoperative RT (50 Gy; 36 Gy is under study in DOREMY-type protocols) → marked shrinkage → wide excision with sciatic nerve preserved.
Systemic therapy?
High-risk (12 cm, round cell component): anthracycline + ifosfamide or trabectedin discussed; he chooses 3 cycles of anthracycline + ifosfamide after fertility preservation.
Follow-up
Chest CT and spine/abdomen imaging at intervals; recurrence can be late.

Teaching points

Myxoid liposarcoma is exceptionally radiosensitive.
Stage the spine and abdomen, not just the lung.
Trabectedin is particularly active in this translocation sarcoma.

See: Sections 03–06 · Algorithm 1 · DOREMY^[23], ISG-STS 1001^[34]

Case 4Radiation-associated angiosarcoma

A bruise that will not fade

64 years, womanBreast RT 7 years agoViolet patches

A 64-year-old woman treated with breast-conserving surgery and RT 7 years ago has a violet, bruise-like patch on the treated breast for 2 months, now with small nodules. She was given antibiotics for "cellulitis".

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Biopsy
Multiple punch biopsies from the darkest areas: angiosarcoma, MYC amplified (radiation-associated).
Extent
Breast MRI and CT chest-abdomen: disease confined to the breast skin and parenchyma, wider than visible.
Treatment
Mastectomy with excision of all irradiated skin and flap reconstruction; weekly paclitaxel before or after surgery is used in some centres; re-irradiation considered in selected cases.
Follow-up
Close skin examination; local recurrence is common.

Teaching points

Persistent bruising or nodules in an irradiated breast need a punch biopsy.
Resect all irradiated skin where possible.
The tiny risk of angiosarcoma is not a reason to withhold breast RT.

See: Sections 02, 05, 06 · Mery 2009^[2], Wiener 2023^[27], ANGIOTAX^[42]

Case 5Metastatic leiomyosarcoma

Lung and liver nodules after a "fibroid"

47 years, womanUterine LMSLung + liver metastases

A 47-year-old woman had a hysterectomy for a rapidly growing "fibroid" 18 months ago (uterine leiomyosarcoma). She now has a cough; CT shows 6 lung nodules and 2 liver lesions. ECOG 1. Echo normal.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Goals
Not curable; aim for symptom control and survival with acceptable toxicity.
First line
Doxorubicin + trabectedin then trabectedin maintenance (LMS-04: longer PFS and OS) with growth-factor support and LFT/CK monitoring; doxorubicin + dacarbazine is an alternative.
Second line
Gemcitabine–docetaxel; later trabectedin, pazopanib, eribulin or dacarbazine.
Supportive
Early palliative care; fertility not relevant; VTE awareness.

Teaching points

Leiomyosarcoma spreads to lung and liver; scan both.
Doxorubicin + trabectedin is the new first-line standard for fit patients.
Morcellation of a suspicious fibroid can spread disease.

See: Sections 06, 08 · Algorithm 3 · LMS-04^[40], LMS-04 OS^[41], SARC 002^[49]

Case 6Oligometastatic synovial sarcoma

Two lung nodules three years later

29 years, womanSynovial sarcoma, knee2 lung nodules

A 29-year-old woman treated 3 years ago for a grade 3 synovial sarcoma near the knee (preoperative RT, wide excision) has two new right-lung nodules (8 and 12 mm) on surveillance CT. Nothing else on PET-CT.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Selection
Long disease-free interval, 2 nodules, controlled primary, fit: a good metastasectomy candidate.
Tempo check
Repeat CT at 6–8 weeks: no new lesions.
Surgery
VATS wedge resections of both nodules: synovial sarcoma, clear margins.
After
No routine adjuvant chemotherapy; chest CT 3-monthly. At a later relapse: ifosfamide-based chemotherapy, pazopanib, trabectedin; HLA-A*02 typing and MAGE-A4 testing for cell-therapy trials.

Teaching points

Selected lung oligometastases can be cured by resection.
A short rescan lets the biology declare itself.
Synovial sarcoma is relatively chemosensitive and a target for MAGE-A4 cell therapy.

See: Sections 06, 08 · Algorithm 3 · Chudgar 2017^[53], SPEARHEAD-1^[9]

Case 7Osteosarcoma · teenager

Knee pain in a 15-year-old cricketer

15 years, boyDistal femurNo metastases

A 15-year-old boy has had knee pain for 3 months, blamed on a cricket injury and treated with painkillers; now it wakes him at night and there is a firm swelling above the knee. X-ray: a mixed lytic-sclerotic distal femoral metaphyseal lesion with a Codman triangle and sunburst periosteal reaction.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Image and stage
MRI of the whole femur (no skip lesion), CT chest (clear), PET-CT (no bone metastases); baseline audiometry, echo, renal function.
Biopsy
Core biopsy at the treating centre, track placed where it will be excised: high-grade conventional osteosarcoma.
Before chemotherapy
Sperm banking.
Treatment
MAP chemotherapy for 10 weeks → wide resection with modular endoprosthesis → necrosis 95% (good response) → MAP resumed a week after surgery to complete 29 weeks in total.
Follow-up
Chest CT and limb X-ray 3-monthly for 2 years; physiotherapy; late-effects clinic (heart, hearing, kidneys).

Teaching points

Night pain in a teenager is a red flag: X-ray the whole bone.
Biopsy where the definitive surgery will be done.
Necrosis after preoperative chemotherapy is the key prognostic factor.

See: Sections 02, 05, 06 · Algorithm 4 · MIOS^[56], EURAMOS-1^[57]

Case 8Ewing sarcoma · pelvis · adult

Hip pain treated as tuberculosis

24 years, manIliac wing + soft tissue massEWSR1::FLI1

A 24-year-old man has 4 months of right buttock pain, fever and weight loss. ESR is raised. He was started on antituberculous treatment for a "lytic lesion" of the ilium without a biopsy. Pain is worse and a mass is now palpable.

Before you open the answer: what is the likely diagnosis, what must be done before treatment, and what is the plan?

Show the line of management

Recognise
Permeative lytic lesion with a large soft tissue mass in a young adult with fever and raised ESR: Ewing sarcoma until proven otherwise.
Diagnose
CT-guided core biopsy (histology, molecular test and culture): small round blue cells, CD99 membranous, EWSR1::FLI1. TB cultures negative; stop antituberculous drugs.
Stage
PET-CT and CT chest: localised. Fertility preservation.
Treatment
VDC/IE every 14 or 21 days (he is 24) with growth factor; local control after 12 weeks: resection if an adequate margin is possible without disabling loss of function, otherwise definitive RT with chemotherapy continuing (doxorubicin omitted); 14–17 cycles in total.

Teaching points

Fever and raised ESR do not exclude Ewing sarcoma.
Do not start empirical antituberculous treatment for a bone lesion without tissue.
Adults need the full paediatric-style protocol.

See: Sections 02, 05, 06 · Algorithm 4 · INT-0091^[61], AEWS0031^[62], Euro Ewing 2012^[65]

12 References & guidelines

WHO Classification of Tumours: Soft Tissue and Bone Tumours, 5th edition (2020).
AJCC Cancer Staging Manual, 8th edition: soft tissue sarcoma of the trunk and extremities, retroperitoneum, abdominal and thoracic viscera; bone.
ESMO–EURACAN–GENTURIS Clinical Practice Guidelines for soft tissue and visceral sarcomas and for bone sarcomas; NCCN Guidelines: Soft Tissue Sarcoma and Bone Cancer (current versions).
ASTRO clinical practice guideline on radiation therapy for soft tissue sarcoma in adults (2021); Transatlantic Australasian Retroperitoneal Sarcoma Working Group consensus (2021).
Children’s Oncology Group and EURO EWING / EURAMOS protocols for Ewing sarcoma and osteosarcoma.
Cross-checked in October 2026 against 24 UpToDate topic reviews (soft tissue sarcoma presentation and staging; pathogenetic factors; uncommon subtypes; head and neck sarcomas; treatment protocols (doses not used); osteosarcoma epidemiology, diagnosis, chemotherapy and radiotherapy; Ewing sarcoma treatment; surgical resection of pulmonary metastases; multimodality treatment, surgery, radiation techniques and perioperative systemic therapy for limb and trunk sarcoma; retroperitoneal sarcoma presentation and initial management; breast and radiation-associated sarcoma; initial and later-line therapy and local treatment of metastatic sarcoma; bone tumour diagnosis and biopsy; bone sarcoma surgery; Ewing sarcoma pathology, molecular genetics, presentation and staging). Facts only, rewritten in our own words; primary studies cited.

Core trials cited on this page (67)

Journal, year, volume and first page; each links to the PubMed record by exact citation.

Numbered in order of first citation in the text

Reference-centre survival (Blay 2024): Blay JY, Penel N, Valentin T, et al. Improved nationwide survival of sarcoma patients with a network of reference centers. Ann Oncol 2024;35:351. PubMed Diagnosis, staging and organisation of care
Sarcoma after breast RT (Mery 2009): Mery CM, George S, Bertagnolli MM, Raut CP. Secondary sarcomas after radiotherapy for breast cancer: sustained risk and poor survival. Cancer 2009;115:4055. PubMed Retroperitoneal, radiation-associated and breast sarcoma
TARPSWG consensus 2021: Swallow CJ, Strauss DC, Bonvalot S, et al. Management of primary retroperitoneal sarcoma (RPS) in the adult: an updated consensus approach from the Transatlantic Australasian RPS Working Group. Ann Surg Oncol 2021;28:7873. PubMed Retroperitoneal, radiation-associated and breast sarcoma
Grade predicts metastasis (Coindre 2001): Coindre JM, Terrier P, Guillou L, et al. Predictive value of grade for metastasis development in the main histologic types of adult soft tissue sarcomas. Cancer 2001;91:1914. PubMed Diagnosis, staging and organisation of care
Sarculator nomograms (Callegaro 2016): Callegaro D, Miceli R, Bonvalot S, et al. Development and external validation of two nomograms to predict overall survival and occurrence of distant metastases in adults after surgical resection of localised soft-tissue sarcomas of the extremities. Lancet Oncol 2016;17:671. PubMed Diagnosis, staging and organisation of care
RPS nomogram (Gronchi 2013): Gronchi A, Miceli R, Shurell E, et al. Outcome prediction in primary resected retroperitoneal soft tissue sarcoma: histology-specific overall survival and disease-free survival nomograms. J Clin Oncol 2013;31:1649. PubMed Retroperitoneal, radiation-associated and breast sarcoma
Larotrectinib (Drilon 2018): Drilon A, Laetsch TW, Kummar S, et al. Efficacy of larotrectinib in TRK fusion-positive cancers in adults and children. N Engl J Med 2018;378:731. PubMed Advanced soft tissue sarcoma
Entrectinib pooled (Doebele 2020): Doebele RC, Drilon A, Paz-Ares L, et al. Entrectinib in patients with advanced or metastatic NTRK fusion-positive solid tumours: integrated analysis of three phase 1-2 trials. Lancet Oncol 2020;21:271. PubMed Advanced soft tissue sarcoma
SPEARHEAD-1: D’Angelo SP, Araujo DM, Abdul Razak AR, et al. Afamitresgene autoleucel for advanced synovial sarcoma and myxoid round cell liposarcoma (SPEARHEAD-1). Lancet 2024;403:1460. PubMed Advanced soft tissue sarcoma
SARC028: Tawbi HA, Burgess M, Bolejack V, et al. Pembrolizumab in advanced soft-tissue sarcoma and bone sarcoma (SARC028). Lancet Oncol 2017;18:1493. PubMed Advanced soft tissue sarcoma
Alliance A091401: D’Angelo SP, Mahoney MR, Van Tine BA, et al. Nivolumab with or without ipilimumab treatment for metastatic sarcoma (Alliance A091401). Lancet Oncol 2018;19:416. PubMed Advanced soft tissue sarcoma
Euro-EWING 99 fusion type (Le Deley 2010): Le Deley MC, Delattre O, Schaefer KL, et al. Impact of EWS-ETS fusion type on disease progression in Ewing’s sarcoma/peripheral primitive neuroectodermal tumor: prospective results from the cooperative Euro-E.W.I.N.G. 99 trial. J Clin Oncol 2010;28:1982. PubMed Bone sarcoma
NCI amputation vs limb-sparing (Rosenberg 1982): Rosenberg SA, Tepper J, Glatstein E, et al. The treatment of soft-tissue sarcomas of the extremities: prospective randomized evaluations of limb-sparing surgery plus radiation therapy compared with amputation and the role of adjuvant chemotherapy. Ann Surg 1982;196:305. PubMed Local therapy for limb and trunk soft tissue sarcoma
Residual disease after unplanned excision (Noria 1996): Noria S, Davis A, Kandel R, et al. Residual disease following unplanned excision of soft-tissue sarcoma of an extremity. J Bone Joint Surg Am 1996;78:650. PubMed Diagnosis, staging and organisation of care
NCI adjuvant EBRT trial (Yang 1998): Yang JC, Chang AE, Baker AR, et al. Randomized prospective study of the benefit of adjuvant radiation therapy in the treatment of soft tissue sarcomas of the extremity. J Clin Oncol 1998;16:197. PubMed Local therapy for limb and trunk soft tissue sarcoma
NCI adjuvant EBRT 20-year (Beane 2014): Beane JD, Yang JC, White D, et al. Efficacy of adjuvant radiation therapy in the treatment of soft tissue sarcoma of the extremity: 20-year follow-up of a randomized prospective trial. Ann Surg Oncol 2014;21:2484. PubMed Local therapy for limb and trunk soft tissue sarcoma
MSKCC brachytherapy trial (Pisters 1996): Pisters PW, Harrison LB, Leung DH, et al. Long-term results of a prospective randomized trial of adjuvant brachytherapy in soft tissue sarcoma. J Clin Oncol 1996;14:859. PubMed Local therapy for limb and trunk soft tissue sarcoma
NCIC SR2: O’Sullivan B, Davis AM, Turcotte R, et al. Preoperative versus postoperative radiotherapy in soft-tissue sarcoma of the limbs: a randomised trial. Lancet 2002;359:2235. PubMed Local therapy for limb and trunk soft tissue sarcoma
IMRT vs conventional RT (Folkert 2014): Folkert MR, Singer S, Brennan MF, et al. Comparison of local recurrence with conventional and intensity-modulated radiation therapy for primary soft-tissue sarcomas of the extremity. J Clin Oncol 2014;32:3236. PubMed Local therapy for limb and trunk soft tissue sarcoma
RTOG 0630: Wang D, Zhang Q, Eisenberg BL, et al. Significant reduction of late toxicities in patients with extremity sarcoma treated with image-guided radiation therapy to a reduced target volume: results of RTOG 0630. J Clin Oncol 2015;33:2231. PubMed Local therapy for limb and trunk soft tissue sarcoma
HYPORT-STS: Guadagnolo BA, Bassett RL, Mitra D, et al. Hypofractionated, 3-week, preoperative radiotherapy for patients with soft tissue sarcomas (HYPORT-STS): a single-centre, open-label, single-arm, phase 2 trial. Lancet Oncol 2022;23:1547. PubMed Local therapy for limb and trunk soft tissue sarcoma
5-fraction preoperative RT (Kalbasi 2020): Kalbasi A, Kamrava M, Chu FI, et al. A phase II trial of 5-day neoadjuvant radiotherapy for patients with high-risk primary soft tissue sarcoma. Clin Cancer Res 2020;26:1829. PubMed Local therapy for limb and trunk soft tissue sarcoma
DOREMY: Lansu J, Bovée JVMG, Braam P, et al. Dose reduction of preoperative radiotherapy in myxoid liposarcoma: a nonrandomized controlled trial. JAMA Oncol 2021;7:e205865. PubMed Local therapy for limb and trunk soft tissue sarcoma
RPS reference-centre surgery (Bonvalot 2009): Bonvalot S, Rivoire M, Castaing M, et al. Primary retroperitoneal sarcomas: a multivariate analysis of surgical factors associated with local control. J Clin Oncol 2009;27:31. PubMed Retroperitoneal, radiation-associated and breast sarcoma
STRASS (EORTC 62092): Bonvalot S, Gronchi A, Le Péchoux C, et al. Preoperative radiotherapy plus surgery versus surgery alone for patients with primary retroperitoneal sarcoma (EORTC-62092: STRASS). Lancet Oncol 2020;21:1366. PubMed Retroperitoneal, radiation-associated and breast sarcoma
RPS recurrence patterns (Gronchi 2016): Gronchi A, Strauss DC, Miceli R, et al. Variability in patterns of recurrence after resection of primary retroperitoneal sarcoma (RPS): a report on 1007 patients. Ann Surg 2016;263:1002. PubMed Retroperitoneal, radiation-associated and breast sarcoma
Sarcoma after breast-conserving RT (Wiener 2023): Wiener AA, Schumacher JR, Hanlon B, et al. Incidence of radiation-associated sarcoma after breast-conserving surgery plus radiation. J Surg Oncol 2023;127:535. PubMed Retroperitoneal, radiation-associated and breast sarcoma
Osteosarcoma response and local recurrence (Bielack 1996): Bielack SS, Kempf-Bielack B, Winkler K. Osteosarcoma: relationship of response to preoperative chemotherapy and type of surgery to local recurrence. J Clin Oncol 1996;14:683. PubMed Bone sarcoma
Enneking staging (1986): Enneking WF. A system of staging musculoskeletal neoplasms. Clin Orthop Relat Res 1986;(204):9–24. PubMed Diagnosis, staging and organisation of care
SMAC meta-analysis update (Pervaiz 2008): Pervaiz N, Colterjohn N, Farrokhyar F, et al. A systematic meta-analysis of randomized controlled trials of adjuvant chemotherapy for localized resectable soft-tissue sarcoma. Cancer 2008;113:573. PubMed Perioperative systemic therapy
EORTC 62931: Woll PJ, Reichardt P, Le Cesne A, et al. Adjuvant chemotherapy with doxorubicin, ifosfamide, and lenograstim for resected soft-tissue sarcoma (EORTC 62931). Lancet Oncol 2012;13:1045. PubMed Perioperative systemic therapy
EORTC pooled adjuvant analysis (Le Cesne 2014): Le Cesne A, Ouali M, Leahy MG, et al. Doxorubicin-based adjuvant chemotherapy in soft tissue sarcoma: pooled analysis of two STBSG-EORTC phase III clinical trials. Ann Oncol 2014;25:2425. PubMed Perioperative systemic therapy
ISG/GEIS short adjuvant (Gronchi 2016): Gronchi A, Stacchiotti S, Verderio P, et al. Short, full-dose adjuvant chemotherapy in high-risk adult soft tissue sarcomas: long-term follow-up of a randomized clinical trial. Ann Oncol 2016;27:2283. PubMed Perioperative systemic therapy
ISG-STS 1001: Gronchi A, Ferrari S, Quagliuolo V, et al. Histotype-tailored neoadjuvant chemotherapy versus standard chemotherapy in patients with high-risk soft-tissue sarcomas (ISG-STS 1001). Lancet Oncol 2017;18:812. PubMed Perioperative systemic therapy
ISG-STS 1001 final: Gronchi A, Palmerini E, Quagliuolo V, et al. Neoadjuvant chemotherapy in high-risk soft tissue sarcomas: final results of a randomized trial from Italian, Spanish, French, and Polish sarcoma groups. J Clin Oncol 2020;38:2178. PubMed Perioperative systemic therapy
SU2C-SARC032: Mowery YM, Ballman KV, Hong AM, et al. Safety and efficacy of pembrolizumab, radiation therapy, and surgery versus radiation therapy and surgery for stage III soft tissue sarcoma of the extremity (SU2C-SARC032). Lancet 2024;404:2053. PubMed Perioperative systemic therapy
EORTC 62012: Judson I, Verweij J, Gelderblom H, et al. Doxorubicin alone versus intensified doxorubicin plus ifosfamide for first-line treatment of advanced or metastatic soft-tissue sarcoma. Lancet Oncol 2014;15:415. PubMed Advanced soft tissue sarcoma
GeDDiS: Seddon B, Strauss SJ, Whelan J, et al. Gemcitabine and docetaxel versus doxorubicin as first-line treatment in previously untreated advanced unresectable or metastatic soft-tissue sarcomas (GeDDiS). Lancet Oncol 2017;18:1397. PubMed Advanced soft tissue sarcoma
Olaratumab phase 2 (Tap 2016): Tap WD, Jones RL, Van Tine BA, et al. Olaratumab and doxorubicin versus doxorubicin alone for treatment of soft-tissue sarcoma: an open-label phase 1b and randomised phase 2 trial. Lancet 2016;388:488. PubMed Advanced soft tissue sarcoma
LMS-04: Pautier P, Italiano A, Piperno-Neumann S, et al. Doxorubicin alone versus doxorubicin with trabectedin followed by trabectedin alone as first-line therapy for metastatic or unresectable leiomyosarcoma (LMS-04). Lancet Oncol 2022;23:1044. PubMed Advanced soft tissue sarcoma
LMS-04 overall survival: Pautier P, Italiano A, Piperno-Neumann S, et al. Doxorubicin-trabectedin with trabectedin maintenance in leiomyosarcoma. N Engl J Med 2024;391:789. PubMed Advanced soft tissue sarcoma
ANGIOTAX: Penel N, Bui BN, Bay JO, et al. Phase II trial of weekly paclitaxel for unresectable angiosarcoma: the ANGIOTAX study. J Clin Oncol 2008;26:5269. PubMed Advanced soft tissue sarcoma
Doxorubicin vs paclitaxel in angiosarcoma (Italiano 2012): Italiano A, Cioffi A, Penel N, et al. Comparison of doxorubicin and weekly paclitaxel efficacy in metastatic angiosarcomas. Cancer 2012;118:3330. PubMed Advanced soft tissue sarcoma
AMPECT (nab-sirolimus): Wagner AJ, Ravi V, Riedel RF, et al. nab-Sirolimus for patients with malignant perivascular epithelioid cell tumors. J Clin Oncol 2021;39:3660. PubMed Advanced soft tissue sarcoma
PALETTE: van der Graaf WT, Blay JY, Chawla SP, et al. Pazopanib for metastatic soft-tissue sarcoma (PALETTE): a randomised, double-blind, placebo-controlled phase 3 trial. Lancet 2012;379:1879. PubMed Advanced soft tissue sarcoma
Trabectedin vs dacarbazine (Demetri 2016): Demetri GD, von Mehren M, Jones RL, et al. Efficacy and safety of trabectedin or dacarbazine for metastatic liposarcoma or leiomyosarcoma after failure of conventional chemotherapy. J Clin Oncol 2016;34:786. PubMed Advanced soft tissue sarcoma
T-SAR: Le Cesne A, Blay JY, Cupissol D, et al. A randomized phase III trial comparing trabectedin to best supportive care in patients with pre-treated soft tissue sarcoma: T-SAR. Ann Oncol 2021;32:1034. PubMed Advanced soft tissue sarcoma
Eribulin vs dacarbazine (Schöffski 2016): Schöffski P, Chawla S, Maki RG, et al. Eribulin versus dacarbazine in previously treated patients with advanced liposarcoma or leiomyosarcoma. Lancet 2016;387:1629. PubMed Advanced soft tissue sarcoma
SARC 002 gemcitabine-docetaxel: Maki RG, Wathen JK, Patel SR, et al. Randomized phase II study of gemcitabine and docetaxel compared with gemcitabine alone in patients with metastatic soft tissue sarcomas (SARC 002). J Clin Oncol 2007;25:2755. PubMed Advanced soft tissue sarcoma
Palbociclib in liposarcoma (Dickson 2016): Dickson MA, Schwartz GK, Keohan ML, et al. Progression-free survival among patients with well-differentiated or dedifferentiated liposarcoma treated with CDK4 inhibitor palbociclib. JAMA Oncol 2016;2:937. PubMed Advanced soft tissue sarcoma
Atezolizumab in ASPS (Chen 2023): Chen AP, Sharon E, O’Sullivan-Coyne G, et al. Atezolizumab for advanced alveolar soft part sarcoma. N Engl J Med 2023;389:911. PubMed Advanced soft tissue sarcoma
Axitinib-pembrolizumab in ASPS (Wilky 2019): Wilky BA, Trucco MM, Subhawong TK, et al. Axitinib plus pembrolizumab in patients with advanced sarcomas including alveolar soft-part sarcoma: a single-centre, single-arm, phase 2 trial. Lancet Oncol 2019;20:837. PubMed Advanced soft tissue sarcoma
Pulmonary metastasectomy series (Chudgar 2017): Chudgar NP, Brennan MF, Munhoz RR, et al. Pulmonary metastasectomy with therapeutic intent for soft-tissue sarcoma. J Thorac Cardiovasc Surg 2017;154:319. PubMed Advanced soft tissue sarcoma
Repeat lung metastasectomy (Weiser 2000): Weiser MR, Downey RJ, Leung DH, Brennan MF. Repeat resection of pulmonary metastases in patients with soft-tissue sarcoma. J Am Coll Surg 2000;191:184. PubMed Advanced soft tissue sarcoma
SBRT for sarcoma lung metastases (Dhakal 2012): Dhakal S, Corbin KS, Milano MT, et al. Stereotactic body radiotherapy for pulmonary metastases from soft-tissue sarcomas: excellent local lesion control and improved patient survival. Int J Radiat Oncol Biol Phys 2012;82:940. PubMed Advanced soft tissue sarcoma
MIOS adjuvant osteosarcoma (Link 1986): Link MP, Goorin AM, Miser AW, et al. The effect of adjuvant chemotherapy on relapse-free survival in patients with osteosarcoma of the extremity. N Engl J Med 1986;314:1600. PubMed Bone sarcoma
EURAMOS-1: Marina NM, Smeland S, Bielack SS, et al. Comparison of MAPIE versus MAP in patients with a poor response to preoperative chemotherapy for newly diagnosed high-grade osteosarcoma (EURAMOS-1). Lancet Oncol 2016;17:1396. PubMed Bone sarcoma
EURAMOS-1 good response: Bielack SS, Smeland S, Whelan JS, et al. Methotrexate, doxorubicin, and cisplatin (MAP) plus maintenance pegylated interferon alfa-2b versus MAP alone in patients with resectable high-grade osteosarcoma and good histologic response to preoperative MAP: first results of the EURAMOS-1 good response randomized controlled trial. J Clin Oncol 2015;33:2279. PubMed Bone sarcoma
OS2006 zoledronate: Piperno-Neumann S, Le Deley MC, Rédini F, et al. Zoledronate in combination with chemotherapy and surgery to treat osteosarcoma (OS2006): a randomised, multicentre, open-label, phase 3 trial. Lancet Oncol 2016;17:1070. PubMed Bone sarcoma
Mifamurtide (INT-0133): Meyers PA, Schwartz CL, Krailo MD, et al. Osteosarcoma: the addition of muramyl tripeptide to chemotherapy improves overall survival: a report from the Children’s Oncology Group. J Clin Oncol 2008;26:633. PubMed Bone sarcoma
INT-0091 (Grier 2003): Grier HE, Krailo MD, Tarbell NJ, et al. Addition of ifosfamide and etoposide to standard chemotherapy for Ewing’s sarcoma and primitive neuroectodermal tumor of bone. N Engl J Med 2003;348:694. PubMed Bone sarcoma
AEWS0031 interval compression: Womer RB, West DC, Krailo MD, et al. Randomized controlled trial of interval-compressed chemotherapy for the treatment of localized Ewing sarcoma: a report from the Children’s Oncology Group. J Clin Oncol 2012;30:4148. PubMed Bone sarcoma
Dose-intensified Ewing chemotherapy (Granowetter 2009): Granowetter L, Womer R, Devidas M, et al. Dose-intensified compared with standard chemotherapy for nonmetastatic Ewing sarcoma family of tumors: a Children’s Oncology Group study. J Clin Oncol 2009;27:2536. PubMed Bone sarcoma
AEWS1031: Leavey PJ, Laack NN, Krailo MD, et al. Phase III trial adding vincristine-topotecan-cyclophosphamide to the initial treatment of patients with nonmetastatic Ewing sarcoma: a Children’s Oncology Group report. J Clin Oncol 2021;39:4029. PubMed Bone sarcoma
Euro Ewing 2012: Brennan B, Kirton L, Marec-Bérard P, et al. Comparison of two chemotherapy regimens in patients with newly diagnosed Ewing sarcoma (EE2012): an open-label, randomised, phase 3 trial. Lancet 2022;400:1513. PubMed Bone sarcoma
REGOBONE: Duffaud F, Mir O, Boudou-Rouquette P, et al. Efficacy and safety of regorafenib in adult patients with metastatic osteosarcoma: a non-comparative, randomised, double-blind, placebo-controlled, phase 2 study. Lancet Oncol 2019;20:120. PubMed Bone sarcoma
CABONE: Italiano A, Mir O, Mathoulin-Pelissier S, et al. Cabozantinib in patients with advanced Ewing sarcoma or osteosarcoma (CABONE): a multicentre, single-arm, phase 2 trial. Lancet Oncol 2020;21:446. PubMed Bone sarcoma

How to cite this page

VancouverChiramana H. Sarcoma: a mini review for clinicians. Oncology Knowledge Hub [Internet]. Nellore (India): drharitha.co.in; 2026 [updated 2026 Oct 11; cited year month day]. Available from: https://drharitha.co.in/professionals/sarcoma

APA 7Chiramana, H. (2026, October 11). Sarcoma: A mini review for clinicians. Oncology Knowledge Hub. Retrieved Month Day, Year, from https://drharitha.co.in/professionals/sarcoma

Free to use and share for education with attribution; please do not alter or use commercially (CC BY-NC-ND 4.0). Replace the italic parts with the date you accessed the page.

Educational summary for health professionals, written in our own words from current guidelines and primary trials. No chemotherapy doses are given. Verify current guidelines, Indian regulatory approvals and individual patient factors before treatment decisions.

Written by Dr. Haritha ChiramanaSenior Medical Oncologist & Hemato-Oncologist · MD, DM (Medical Oncology) · C.R. Reddy Cancer Center, Nellore, Andhra Pradesh, India

Medically reviewed by Dr. Haritha Chiramana on 8 October 2026. This page is general education and cannot replace an individual consultation.