VASCULAR COMPLICATIONS OF THORACIC OUTLET SYNDROME

Vascular complications of thoracic outlet syndrome are uncommon but ma y result in significant long-term disability. This report documents a retrospective review of 17 such patients. Ten patients presented with acute onset of upper extremity swelling and axillosubclavian vein thro mbosis. One patient presented with chronic, intermittent arm swelling and subclavian vein stenosis. Three patients presented with acute symp toms of upper extremity emboli, and three presented with chronic arm c laudication. Cervical ribs were discovered in four patients with arter ial symptoms and in no patients with venous symptoms. All ten patients with acute venous thrombosis underwent successful thrombolysis, with venous stenosis uncovered in 8. Thrombolysis was also performed for tw o patients with arterial emboli. All 17 patients underwent surgical de compression of the thoracic outlet, 16 via a supraclavicular approach and one via a transaxillary approach. One subclavian arteriotomy with endarterectomy and one resection of a subclavian artery aneurysm were performed at the time of decompression. Repeat venography after decomp ression demonstrated persistent venous stenosis in one patient that wa s treated with balloon angioplasty and stenting. After a mean of 22 mo nths' follow-up, 12 patients had no residual symptoms, and 5 had exper ienced significant improvement of symptoms. In conclusion, a combined approach of thrombolysis and surgical decompression of the thoracic ou tlet provides a salutary outcome in a majority of patients.