<prompt> The tumor causing polycythemia due to erythropoietin production is -Cerebellar hemangiomaMedulloblastomaEpendymomaOugodendroglioma  <response>: The tumors causing inappropriate rise in erythropoietin are renal cell caarcinoma,hepatocellular carcinoma ,cerebellar hemangioblastoma.Reference :Harsh mohan textbook of pathology sixth edition pg no 359. 