A 44-Year-Old Patient Presents With Upper Back Lesion

A 44-Year-Old Patient Presents With Upper Back Lesion

July 9, 2017

A 44-year-old man presents with a lesion on his right upper back, and a biopsy is performed. What is your diagnosis?

A 44-year-old man presents with a lesion on his right upper back, and a biopsy is performed.

Based on the image shown, what is your diagnosis?