|Poll|September 13, 2018

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

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?

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