Chronic lymphocytic leukemia coexisting with chronic myelomonocytic leukemia.

A case with coexisting chronic lymphocytic leukemia (CLL) and chronic myelomonocytic leukemia (CMML) is described. A 74-year-old man with a typical B-CLL also showed sustained peripheral blood and bone marrow monocytosis. Typical myelodysplastic changes and monosomy 7 were also found.