Isolated leukemia cutis--a case report.

A 67-year-old woman with acute myelomonocytic leukemia had a clinical course characterized by the initial appearance of leukemia cutis without bone marrow involvement. When marrow involvement subsequently occurred, induction chemotherapy cleared all manifestations of the illness. Shortly thereafter, while blood and bone marrow remained in remission, the skin lesions reappeared. The introduction of 6-thioguanine, as part of the maintenance treatment protocol, resulted in the rapid and permanent disappearance of the leukemic skin infiltrates.