is polycythemia vera a type of myeloproliferative neoplasm.
Polycythemia Vera. Polycythemia vera (PV) is a type of blood cancer known as a myeloproliferative neoplasm. It involves the abnormal development and function of bone marrow cells that produce blood cells, and leads to the overproduction of red blood cells. White blood cells and platelets may also be overproduced.