title: Hematology problem. Myeloproliferative disorders.
mesh_terms: D000368:Aged; D002869:Chromosome Aberrations; D002905:Chromosomes, Human, 4-5; D006403:Hematologic Tests; D006801:Humans; D008297:Male; D009196:Myeloproliferative Disorders / Q000175:diagnosis* / Q000235:genetics; D011087:Polycythemia Vera / Q000175:diagnosis; D013920:Thrombocythemia, Essential / Q000175:diagnosis / Q000235:genetics