What Caused Back Pain in This 62-Year-Old Man?

September 13, 2018
Cesar A. Moran, MD
Cesar A. Moran, MD

A 62-year-old man presents with back pain. Diagnostic imaging shows a sacral mass. What is your diagnosis?

A 62-year-old man presents with back pain of several weeks duration. Diagnostic imaging showed the presence of a sacral mass. Surgical biopsy of the mass is performed.

Based on the image shown, what is your diagnosis?