Abstract
Arterial thoracic outlet syndrome (TOS) constitutes less than 1%, involving the second part of the subclavian artery (SCA). It can present as an acute upper limb ischemia or aneurysm formation. Here is a case of a 29-year-old male presented with complaints of rest pain over the left hand for the past 2 weeks. Upon evalution, found to have bilateral cervical rib with left subclavian artery occlusion. Treated by cervical rib excision decompression of scalene triangle, subclavian endarterectomy and left brachial embolectomy. Arterial TOS secondary to the cervical rib is rare; pathology involving this external compression results in repeated trauma in the intima of the SCA, resulting in subclavian stenosis, poststenotic dilatation, thrombosis, and aneurysm formation with mural thrombus and distal embolization. Symptomatic cases need decompression +/- arterial repair.
Published Version
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