title: Hairy cell leukemia in a patient with polycythemia vera.
abstract: A 70-year-old female patient is described in whom classical hairy cell leukemia developed following a 15-year course of polycythemia vera continued by myelofibrosis. This association has not been described previously.
mesh_terms: D000368:Aged; D001803:Blood Transfusion; D005260:Female; D006801:Humans; D007943:Leukemia, Hairy Cell / Q000209:etiology* / Q000628:therapy; D011087:Polycythemia Vera / Q000150:complications*; D055728:Primary Myelofibrosis / Q000209:etiology; D013163:Splenomegaly / Q000209:etiology