|Poll|February 1, 2016

Retroperitoneal Mass Found in 43-Year-Old Patient

Author(s)Cesar A. Moran, MD

A 43-year-old man presents with a retroperitoneal mass, and a biopsy is performed. What is your diagnosis?

A 43-year-old man presents with a retroperitoneal mass, and a biopsy is performed.

What is your diagnosis?

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