Acute lymphocytic leukemia presenting as an isolated scalp nodule in an infant.

We describe the presentation and management of a patient referred for a presumed benign scalp lesion in infancy. The subcutaneous nodule was ultimately diagnosed as the first manifestation of acute lymphoblastic leukemia. We review leukemia cutis with special emphasis on the differential diagnosis of scalp nodules in infancy that may be encountered by the plastic surgeon.