Hematology problem.
D000368:Aged; D001853:Bone Marrow / Q000473:pathology; D003937:Diagnosis, Differential; D004912:Erythrocytes / Q000473:pathology; D006801:Humans; D006965:Hyperplasia; D007962:Leukocytes / Q000473:pathology; D008297:Male; D011289:Preleukemia / Q000097:blood / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy