Clinical Challenge: A Growth on the Scalp of an Elderly Man

The patient is a 91-year-old man referred by his barber for assessment of a growth on his scalp. He states that he was told by a physician that it was a "basal cell" cancer 2 years ago, but he denies ever undergoing a biopsy. He is a nonsmoker and admits to many years of prolonged sun exposure. Examination reveals a ...