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Skin cancer
Question 1 of 5

A 76-year-old man presented to the dermatology clinic for an annual total-body skin examination as well as evaluation of a new submental skin lesion. His medical history included successfully treated malignant melanoma in situ, multiple actinic keratoses, and an eccrine carcinoma. During the examination, a 1-cm pinkish red plaque was found on the skin in the left perianal region. The patient was unaware of the lesion and did not report any symptoms upon questioning.

Which of the following is the most likely diagnosis?

amelanotic melanoma

infectious dermatosis

lichen planus

perianal basal cell carcinoma

squamous cell carcinoma

This quiz is not accredited for CME.

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