what is the term for an increase in the total cell mass of the blood
[polâ³e-si-theÂ´me-ah] an increase in the total red blood cell mass of the blood; called also erythrocythemia, hypercythemia, and hypererythrocythemia. There are two distinct forms of the disease: Primary polycythemia (polycythemia vera) is a myeloproliferative disorder of unknown etiology.