See the next page for the diagnosis 17-year-old man was referred for evaluation of a hip mass. He had a history of local swelling with limitationof motion in his right hip. There was no history of Tumoral calcinosis is a rare disease characterized by calcified soft tissue masses near large joints. Approximately one-third of the cases exhibit familial inheritance.1 Nearly 80% of reported patients are black. Typically, it presents in young African men with swelling around large joints which could be painful. However, the mass is generally painless and grows slowly over a year...