Skin Lesion on Arm of 54-Year-Old Patient

A 54-year-old woman presents with a skin lesion on her right arm, and a biopsy is performed. What is your diagnosis?

A 54-year-old woman presents with a skin lesion on her right arm, and a biopsy is performed.

Based on the image shown, what is your diagnosis?

A. Squamous cell carcinoma

B. Merkel cell carcinoma

C. Mycosis fungoides

D. Basal cell carcinoma

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