Lower Back Lesion in 52-Year-Old Patient

Lower Back Lesion in 52-Year-Old Patient

June 16, 2017

A 52-year-old man presents with a lesion of the lower back, and a biopsy is performed. What is your diagnosis?

A 52-year-old man presents with a lesion of the lower back, and a biopsy is performed.

Based on the image shown, what is your diagnosis?