Vascular thoracic outlet in a competitive swimmer: a case report.

Author:  Nitz AJ, Nitz JA

Thoracic outlet syndrome (TOS) is a well-described condition resulting from compression of the brachial plexus, subclavian artery, and/or vein.  Though symptoms of pain, numbness, tingling and signs of muscular weakness associated with this condition usually begin insidiously, on rare occasions the presentation is of acute onset and may represent an acute vascular compression.  An unusual form of “effort” thrombosis of the subclavian vein may require emergency care in order to ensure controlled clot lysis and thrombus dissolution.  This case report presents a competitive swimmer who developed an acute onset of limb cyanosis during training. 

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