title: Hairy cell leukemia - reclassification of an old entity.
mesh_terms: D006801:Humans; D007938:Leukemia / Q000145:classification* / Q000473:pathology; D007951:Leukemia, Myeloid / Q000145:classification* / Q000473:pathology; D008206:Lymphatic Diseases / Q000145:classification* / Q000473:pathology; D011379:Prognosis