title: Polycythemia vera followed by hairy cell leukemia variant.
authors: Princess Margaret Hospital.
authors: Rouslan
authors: R
authors: Kotchetkov
authors: Vikas
authors: V
authors: Gupta
mesh_terms: D001853:Bone Marrow / Q000473:pathology; D018450:Disease Progression; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology; D007943:Leukemia, Hairy Cell / Q000097:blood / Q000175:diagnosis / Q000209:etiology / Q000473:pathology*; D017254:Leukemic Infiltration / Q000175:diagnosis / Q000473:pathology; D008875:Middle Aged; D011087:Polycythemia Vera / Q000097:blood / Q000150:complications / Q000175:diagnosis / Q000473:pathology*