This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Massive splenomegaly with pancytopenia - \nSelect and explain. \nA. CLL, B. Pure red cell aplasia, C. CML, D. Myelofibrosis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Myelofibrosiso Massive splenomegaly is referred to as extension of spleen greater than 8 cm below the left costal margin or weight of spleen more than 1 Kg.o Causes of massive Splenomegaly are - CML Polycythemia vera Autoimmune hemolytic anemia Lymphomas Gaucher's disease Diffuse splenic hemangiomatosis Hairy cell leukemia CLL Myelofibrosis Sarcoidosiso Amongst these conditions pancytopenia is seen in i.e., massive splenomegaly with pancytopenia : - o Hairy cell leukemia Myelofibrosis Gaucher's disease", 'role': 'assistant'}]