Nonmelanoma Skin Cancer

Photo Challenge

Chronic Ulcerative Lesion

A 46-year-old man with a history of a left leg burn during childhood that was unsuccessfully treated with multiple skin grafts presented as a...

MD IQ

Photo Challenge

Atypical Keratotic Nodule on the Knuckle

A 75-year-old man presented with a lesion on the knuckle of 5 months’ duration. He reported that the lesion initially grew very quickly before...

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