Pelvic digit is a rare congenital anomaly that may be misinterpreted as neoplasm or a post-traumatic condition. Failure to recognize this phenomenon may lead to unnecessary investigation and potential invasive intervention. The case of an 18-year-old male with pelvic digit is presented, followed by consideration of pertinent imaging features.

We report the case of a 49-year-old man with a 10-year history of gout, who presented with a painful left first costochondral junction mass. A computed tomography (CT)-guided biopsy of the mass revealed foreign body giant cell reaction and crystalline deposition consistent with tophaceous gout.