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Hip Pain in a 13-Year Old Boy With a Pelvic Mass

A 13-year-old boy presented to an outside hospital with complaints of intermittent left hip pain after playing football. The patient was thought to have a muscle strain. He was prescribed nonsteroidal antiinflammatory drugs for symptomatic relief, with instructions to temporarily abstain from vigorous sports activities. However, the hip pain persisted. He presented 3 months later to the current authors’ institution with the same complaints. He denied any history of trauma, fever or chills, weight loss, or other symptoms. His medical history was unremarkable. He was not taking any medications at that time. Orthopaedic • Radiology • Pathology Conference CME ARTICLE