title: Thrombocytopenia and decreased megakaryocytes.
mesh_terms: D006801:Humans; D007951:Leukemia, Myeloid / Q000175:diagnosis*; D008533:Megakaryocytes; D008875:Middle Aged; D011289:Preleukemia / Q000175:diagnosis*; D013921:Thrombocytopenia / Q000175:diagnosis*