Deep Vein Thrombosis of the Subclavian Vein in a College Volleyball Player

vian deep vein thrombosis (DVT) without secondary cause. It is frequently referred to as effort-induced thrombosis and is exclusive of DVT cases with clear causes such as postsurgical immobilization, smoking, polycythemia, and cancer. PSS is most common in 10to 35-year-olds, has been reported more frequently in men, and usually occurs in the dominant upper extremity. The syndrome often occurs following an activity involving repetitive abduction and external rotation of the involved extremity, such as throwing or weightlifting; however, there may be no history of obvious antecedent trauma. Although 80% of PSS cases are associated with thoracic outlet syndrome, only 1% to 12% of patients with thoracic outlet syndrome have complaints consistent with PSS.