FRCPath Haem Part 1 MCQ-Gen Haem 141

A child presents with hepatosplenomegaly and cytopenias. Bone marrow aspirate shows Large macrophages with crumpled cytoplasm. Likely positive stain?

• Myeloperoxidase
• PAS (Periodic Acid–Schiff)
• Sudan Black B
• TRAP (Tartrate-resistant acid phosphatase)

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