Young Man With Left Arm Pain and Swelling

A 19-year-old previously healthy man presented to the emergency department (ED) with 1-day history of progressive left arm pain and swelling. The day before, the patient had been performing overhead shoulder presses, using 30-lb dumbbells. He reported an immediate twinge of pain in the left arm during the exercise. The pain subsided with rest, but mild edema to the left arm ensued. The following morning, the patient noted increasing pain and swelling to the left arm, with marked ecchymotic discoloration (Figures 1 and 2).

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