Aleukemic Leukemia Cutis in a Child Preceding T-Cell Acute Lymphoblastic Leukemia

An 8-year-old boy presented with a widespread cutaneous eruption featuring macules, papules, nodules, and ulcers. The histologic infiltrate showed T lymphoblasts, but there was no sign of systemic involvement, so aleukemic leukemia cutis was diagnosed. Two months later, he developed leukemia in peripheral blood and bone marrow that was characterized as T-cell acute lymphoblastic leukemia.