polycythemia rubra vera
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a chronic form of polycythemia of unknown cause; characterized by bone marrow hyperplasia, an increase in blood volume as well as in the number of red blood cells, redness or cyanosis of the skin, and splenomegaly.
Synonym(s): erythremia, Osler disease, Osler-Vaquez disease, polycythemia rubra vera, polycythemia rubra, Vaquez disease
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