Polycythemia vera

Polycythemia vera is a rare, chronic disorder involving the overproduction of blood cells in the bone marrow (myeloproliferation). The overproduction of red blood cells is most dramatic, but the production of white blood cells and platelets is also elevated in most cases. Since red blood cells are overproduced in the marrow, this leads to abnormally high numbers of circulating red blood cells (red blood mass) within the blood. Consequently, the blood thickens and increases in volume, a condition called hyperviscosity. Thickened blood may not flow through smaller blood vessels properly.
Providence Cancer Center Oncology and Hematology Care Clinics offer expert, team-based care for patients with cancer or blood disorders. We work closely with patients, families and referring physicians during diagnosis, evaluation and treatment.