Medicine All of the following are causes of pancytopenia with cellular bone marrow except: A Paroxysomal noctural hemoglobinuria B Dyskeratosis congenita C Megaloblastic anemia D Hairy cell leukemia 💡 Explanation All of the following are causes of pancytopenia with cellular bone marrow except: ✓ Correct Answer: B. Dyskeratosis congenita