Pseudoaneurysms resulting from vascular impingement by osteochondromas are extremely rare. The authors detail the case of a 19-year-old man who represents the third known report in the English literature of a brachial artery pseudoaneurysm associated with a humeral osteochondroma. In patients presenting with a painful upper arm mass and a history of multiple hereditary exostoses, one must have a high index of suspicion for pseudoaneurysm.
From the Division of Plastic and Reconstructive Surgery, The Children's Hospital of Philadelphia, Division of Plastic and Reconstructive Surgery, University of Pennsylvania Health System, Philadelphia, PA.
Received April 25, 2003, and accepted for publication May 23, 2003.
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