A 48-Year-Old Man Comes to the Office for a Routine

A 48-year-old man comes to the office for a routine medical evaluation and is found to have a skin lesion on his upper back.  The patient is unsure when the lesion appeared but first noticed it several weeks ago during a shower.  It is not painful, and he has no other symptoms.  He has no chronic medical conditions and takes no medications.  The patient drinks 1 or 2 beers nightly and does not use tobacco or illicit drugs.  He works as a surfing instructor.  Vital signs are within normal limits.  Skin examination findings are shown in the exhibit.  The remainder of the examination is normal.  Which of the following is the most likely diagnosis?

A) Angiosarcoma
B) Basal cell carcinoma
C) Cherry hemangioma
D) Keratoacanthoma
E) Malignant melanoma
F) Seborrheic keratosis

Correct Answer:

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