title: Acute myeloid leukaemia developing in a patient with longstanding untreated chronic lymphocytic leukaemia.
abstract: A patient with chronic lymphocytic leukaemia untreated for 5 years subsequently developed acute myeloid leukaemia. It is suggested that reduced immunocompetence is the likely mechanism in this case and may also be a contributory factor in those cases which have been ascribed to the use of alkylating agents or radiation.
mesh_terms: D000368:Aged; D006801:Humans; D007945:Leukemia, Lymphoid; D015470:Leukemia, Myeloid, Acute; D008297:Male; D009378:Neoplasms, Multiple Primary