Pancytopenia with hypercellular marrow could be due to all, EXCEPT:: (A) Myelodysplasia, (B) Paroxysmal nocturnal hemoglobinuria, (C) Sarcoidosis, (D) Dyskeratosis congenita
Answer is D. Dyskeratosis congenita is associated with pancytopenia and hypocellular bone marrow. Pancytopenia with hypercellular marrow is seen in: Myelodysplasia Myelofibrosis Hairy cell leukemia Tuberculosis Sarcoidosis Brucellosis PNH Hypocellular Bone marrow +/- Cytopenia: Q fever Legionnaires disease Anorexia nervosa, starvation Mycobacterium