A 3-cm exophytic, mildly tender nodule on an African American man

A 26-year-old African American man with no significant past medical history presents with a growth on his left foot that had been increasing in size for 1 year. He initially thought it was a wart but had concerns when it continued to grow and became painful. Examination reveals an exophytic, brown, and mildly tender nodule, 3cm in diameter, ...