1925. Causes of secondary polycythemia may include: (A) Chronic cor pulmonale, (B) Renal carcinoma, (C) Cerebellar haemangioblastoma, (D) All of the above
Answer is D. Secondary polycythaemia occur due to high altitude,cardiovascular disease ,pulmonary disease with alveolar hypoventilation,heavy smoking,inappropriate erythropoietin(renal cell carcinoma ,hydronephrosis,hepatocellular carcinoma ,cerebellar hemangioblastoma ,massive uterine leiomyoma.). Reference :Harsh mohan textbook of pathology sixth edition pg no 359.