Polycythemias/Erythrocytosis

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Polycythemias/Erythrocytosis

Increased number of red blood cells

Two forms:
• primary polycythemia
• polycythemia vera

Clinical features are related to the hyperviscosity of the blood

Polycythemia Vera:
Chronic myeloproliferative disorder from hyperplasia of bone marrow elements
Increased blood cell mass and viscosity

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