This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sickle Cell Disease, G6PD deficiency and other Hemolytic Anemia, Subject name: Medicine
Pancytopenia with cellular marrow is seen in all except? 
Select and explain. 
A. Megaloblastic anemia, B. Myelodysplasia, C. Paroxysmal nocturnal Hemoglobinuria, D. G6PD Deficiency
D: G6PD Deficiency
Answer: D: G6PD Deficiency 
Explanation: G6PD deficiency does not present with pancyopenia. Cause of Pancytopenia with Cellular Bone Marrow Primary bone marrow diseases Myelodysplasia Paroxysmal nocturnal hemoglobinuria Myelofibrosis Some aleukemicleukemia Myelophthisis Bone marrow lymphoma Hairy cell leukemia Secondary to systemic diseases Systemic lupus erythematosus Hypersplenism B12, folate deficiency Overwhelming infection Alcohol Brucellosis Sarcoidosis Tuberculosis Leishmaniasis