Myeloid sarcoma presenting as an isolated nodule in a patient with acute myelogenous leukemia.

We report a case of an elderly female in remission from acute myelogenous leukemia that presented with a nonhealing enlarging asymptomatic nodule on her right thigh. A wide excision of the nodule and histological examination revealed myeloid sarcoma without evidence or overlap of leukemia cutis, which had been suspected from nodules that had developed early in the course of the disease. The patient subsequently underwent radiation therapy to the area with sustained clearance.