What Is Your Diagnosis? Spitzoid Melanoma

A previously healthy 12-year-old white adolescent boy presented to the Vanderbilt University Dermatology Clinic, Nashville, Tennessee, with a 1-cm ulcerated nodule on the distal one-third of his left lower leg of 6 months’ duration. The lesion was asymptomatic but had increased in size and had intermittently bled. His parents reported a considerable number of sunburns in his lifetime. His medical and family history was noncontributory. A shave biopsy was performed.