Pancytopenia with hypocellular bone marrow seen in:: (A) Fanconi's anemia, (B) Paroxysmal nocturnal hemoglobinuria, (C) Hairy cell leukemia, (D) Myelopthisis
Answer is A. a. Fanconi's anemia(Ref: Nelson's 20/e p 2362-2371, Chai 8/e p 345-347)Fanconi's anemia shows pancytopenia with hypocellular bone marrow while others in the options cause hypercellular bone marrow.