Jerry Spivak

All articles by Jerry Spivak

Polycythemia vera

Polycythemia vera What every physician needs to know: Polycythemia vera is a clonal hematopoietic stem cell disorder, characterized by the unregulated production of red cells, white cells and platelets, thrombotic and hemorrhagic events, ocular migraine, pruritus, erythromelalgia, splenomegaly due to extramedullary hematopoiesis, myelofibrosis, and, rarely, acute leukemia. Are you sure your patient has polycythemia vera?…


Erythrocytosis What every physician needs to know: Erythrocytosis, also known as secondary polycythemia or secondary erythrocytosis to distinguish it from the chronic myeloproliferative disease, polycythemia vera, is an increase in the number of circulating red cells above the gender-specific normal level. Erythrocytosis can be either relative (pseudoerythrocytosis) or absolute. Continue Reading Relative erythrocytosis occurs when…

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