Clinical Challenge: A Growing Lesion First Observed in Early Childhood

An 18-year-old Caucasian male presents for evaluation of a growth on his leg that he first noted in early childhood. During the past several years, the lesion has increased in size and has darkened in color. He denies both personal and family history of skin cancer. Examination of his abdomen reveals a hyperpigmented, irregularly shaped verrucoid plaque. Full body examination ...