A case of a symptomatic 5.1-cm left subclavian venous aneurysm, which was treated with surgical excision, is presented. Most venous aneurysms in the head and neck region involve the internal or external jugular veins and are asymptomatic. Aneurysms involving the subclavian or axillary veins are rare. The natural history of these aneurysms is benign with no reported instances of rupture or thromboembolic events. Operative treatment is most often undertaken for cosmetic reasons or for the development of symptoms.
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