Chest Lesion Discovered in 49-Year-Old Patient

September 22, 2016

A 49-year-old man presents with a lesion on the right side of his chest, and a biopsy is performed. What is your diagnosis?

A 49-year-old man presents with a lesion on the right side of his chest, and a biopsy is performed.

Based on the image shown, what is your diagnosis?