Nine cases from the clinic.
A 19-year-old college student from Nellore has had 3 weeks of cough and 4 days of breathlessness lying flat, with a puffy face. Chest X-ray shows a wide mediastinum; CT shows a 10 cm anterior mass with a pleural effusion and a narrowed trachea. WBC 142,000/µL with blasts; LDH 4× normal; potassium and urate high.
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
- Protect the airway
No sedation or lying flat; ICU review. The diagnosis can come from blood flow cytometry (and pleural fluid) without a mediastinal biopsy.
- Diagnose
Blasts TdT+, cytoplasmic CD3+, CD7+, CD1a+: T-ALL. BCR::ABL1 negative. Lumbar puncture later, when blasts have cleared from the blood.
- Tumour lysis
High risk (WBC ≥100,000 and LDH ≥2×): IV fluids and rasburicase after a G6PD check; close electrolyte monitoring; steroid prephase begins debulking.
- Treat
Paediatric-inspired asparaginase-rich regimen with CNS prophylaxis; MRD at count recovery; T-ALL MRD in blood and marrow agree, but follow the protocol.
Teaching points
- Mediastinal mass: the airway comes before the biopsy.
- ALL with a very high count is high risk for tumour lysis.
- In adults nelarabine has not improved first-line outcomes; in young adults the COG data are the reference.
See: Sections 02, 03 and 06, Algorithm 1.
A 26-year-old woman from Kavali has had fever and weakness for 6 weeks. Haemoglobin 6.2 g/dL, platelets 34,000/µL, WBC 18,000/µL with 60% blasts. Marrow: B-ALL, CD19+, CD10+, CD20 on 40% of blasts; normal karyotype; BCR::ABL1 negative; spinal fluid CNS-1.
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
- Classify
Ph-negative B-ALL, standard risk (age <60, WBC <30,000, no adverse genetics). Ph-like screen if available.
- Induction
Paediatric-inspired asparaginase-rich regimen plus rituximab (CD20+); CNS prophylaxis; watch liver, pancreas and clotting with asparaginase.
- After remission
CR with MRD negative at 10⁻⁴: consolidation chemotherapy with blinatumomab, then maintenance for 2–3 years.
- Keep her on track
Social worker and family meeting at the start: abandonment and interruptions are common in India and lower relapse-free survival.
Teaching points
- Rituximab for CD20+ B-ALL under 65 improves EFS.
- Blinatumomab in consolidation raised 3-year survival from 68% to 85% (E1910).
- Adherence is part of the treatment.
See: Sections 06 and 08, Algorithms 2 and 3.
A 33-year-old teacher with B-ALL (WBC 52,000/µL at diagnosis) is in morphological CR after induction, but flow MRD is 2 × 10⁻³. His younger sister is an HLA match.
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
- Risk
High risk on two counts: WBC >30,000 and MRD ≥10⁻⁴.
- Clear the MRD
One or two cycles of blinatumomab (in hospital at the start; watch CRS and neurotoxicity). About three-quarters become MRD-negative.
- Consolidate with transplant
Allogeneic HCT from his sister; GRAALL data show benefit from HCT when MRD is ≥10⁻³.
- If MRD persists
More blinatumomab is unlikely to help; consider inotuzumab or a trial, and plan transplant timing to limit VOD risk.
Teaching points
- MRD after induction is the strongest single predictor in adult ALL.
- Blinatumomab is the bridge from MRD-positive to transplant.
- Use an assay that reaches 10⁻⁴.
See: Sections 04 and 06, Algorithm 3.
A 52-year-old woman from Gudur with diabetes presents with tiredness and bruising: WBC 64,000/µL, platelets 22,000/µL. Flow shows B-ALL; RT-PCR on day 2 shows BCR::ABL1 (p190). Echo normal; no effusion or bleeding history.
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
- Start the TKI
Dasatinib at once (generic available; no effusion or bleeding history); baseline BCR::ABL1 qPCR.
- Partner gently
A steroid alone or vincristine–steroid, not hyper-CVAD: fewer early deaths with equal survival (GRAAPH-2005). Control glucose closely on steroids.
- Monitor
BCR::ABL1 qPCR after 1–2 consolidations: falling. Her brother is a match → allogeneic HCT (reduced intensity considered for age and diabetes).
- After transplant
Restart the TKI when counts recover and continue ≥1 year; repeat MRD. Rising MRD → kinase-domain mutation testing (T315I → ponatinib, if obtainable).
Teaching points
- Ph+ ALL needs a TKI more than intensive chemotherapy.
- BCR::ABL1 qPCR is the MRD test.
- Check ponatinib access early in India.
See: Section 06, Algorithm 4.
A 68-year-old retired clerk with treated ischaemic heart disease has B-ALL, CD22 on 95% of blasts, BCR::ABL1 negative, performance status 1. He wants treatment that keeps him at home as much as possible.
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
Honest talk: cure is possible but less likely than in younger adults; intensive regimens carry high treatment mortality at his age.
- Choose
Inotuzumab-based moderate-intensity treatment (with dexamethasone, or with mini-hyper-CVD), avoiding an anthracycline-heavy regimen.
- Watch
Weight, abdominal girth and bilirubin for liver VOD (EBMT criteria); infections; prolonged low platelets.
- If frail later
Vincristine–steroid or POMP maintenance for disease control; palliative care alongside.
Teaching points
- Inotuzumab is not for T-ALL (no CD22).
- Older adults need gentler, antibody-based regimens.
- Talk about goals before choosing intensity.
See: Section 06 (older or unfit), Algorithm 2.
A 22-year-old on induction with pegylated asparaginase develops a severe headache and a generalised seizure on day 20. Platelets 60,000/µL; fibrinogen 90 mg/dL; antithrombin 45%.
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
Urgent brain imaging: superior sagittal sinus thrombosis. Differentials: bleeding, methotrexate encephalopathy, asparaginase encephalopathy.
- Anticoagulate
LMW heparin with anti-Xa monitoring (antithrombin is low); antithrombin replacement for this high-risk clot; support fibrinogen and platelets to allow anticoagulation.
- Asparaginase
Hold it; after stabilisation (about 4 weeks) decide with a thrombosis expert whether to resume, because asparaginase intensity matters for cure.
- Duration
Anticoagulation for at least 6 months.
Teaching points
- Asparaginase lowers antithrombin and fibrinogen: clots and bleeds together.
- Cerebral sinus thrombosis typically appears after several weeks.
- Thrombosis affects about 14% of adults on asparaginase.
See: Section 06 (toxicity), Algorithm 6.
A 35-year-old in consolidation receives high-dose methotrexate. At 42 hours her creatinine has doubled and the methotrexate level is far above the expected curve. She has a small pleural effusion and has been taking a proton-pump inhibitor and ciprofloxacin.
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
- Stop the culprits
Stop the proton-pump inhibitor and ciprofloxacin; avoid NSAIDs.
- Support clearance
Increase IV fluids and urinary alkalinisation (urine pH ≥7) while urine output allows; increase leucovorin according to the measured levels.
- Glucarpidase
Levels stay high with kidney injury → glucarpidase, ideally within 48–60 hours of the start of the infusion; dialysis is only a temporary bridge.
- Next cycle
Drain the effusion and review drugs before the next dose.
Teaching points
- Methotrexate is cleared by the kidney: acid urine and dehydration cause delay.
- Effusions are a reservoir.
- Glucarpidase works best early.
See: Section 06 (toxicity), Algorithm 6.
A 30-year-old man treated for Ph-negative B-ALL relapses in the marrow 14 months after diagnosis, while on maintenance. Blasts CD19+ and CD22+; spinal fluid clear; testes normal. He has a matched sibling.
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
- Re-evaluate
Marrow flow for CD19, CD22 and CD20; cytogenetics (KMT2A?); lumbar puncture; donor work-up now.
- Re-induce
Blinatumomab (survival advantage over chemotherapy in TOWER) or inotuzumab (higher CR rate in INO-VATE); because HCT is planned, blinatumomab avoids the VOD risk of inotuzumab before transplant.
- Consolidate
MRD-negative second remission → allogeneic HCT from his sibling; CNS prophylaxis continues.
- If it fails
CD19 CAR-T: in India NexCAR19 is approved for relapsed B-cell leukaemia; check eligibility and cost.
Teaching points
- Early relapse needs transplant for cure.
- Choose the antibody with the transplant in mind.
- Antigen loss can follow antibody or CAR-T therapy: re-test at each relapse.
See: Section 06 (relapse), Algorithm 5.
A 21-year-old has neck nodes and a large anterior mediastinal mass. Node core biopsy: TdT+, CD3+, CD7+, CD1a+ lymphoblasts. Marrow shows 8% lymphoblasts; spinal fluid CNS-1; LDH twice 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
- Name it
Mass with <20% marrow blasts = T-lymphoblastic lymphoma: the same disease as T-ALL.
- Treat
An ALL protocol of T lineage with full CNS prophylaxis, tumour-lysis prevention and airway care; not a CHOP-type lymphoma regimen.
- Follow
Marrow and blood MRD as per protocol; about 60% of T-LBL later become leukaemic without effective therapy.
- Open question
Residual mediastinal mass at the end of treatment: the supplied sources do not settle the role of RT; decide with the protocol and tumour board.
Teaching points
- LBL is treated as ALL.
- Thymoma is the key mimic: keratin and polyclonal thymocytes.
- CNS involvement is frequent: always do the lumbar puncture.
See: Sections 03, 05 and 06.