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  • Title: [Complete cervical rib. Possible neurovascular implications of the upper limb].
    Author: Morbidelli A, Miani S, Bortolani E.
    Journal: Minerva Chir; 1989 Apr 15; 44(7):1167-72. PubMed ID: 2664564.
    Abstract:
    The thoracic outlet syndrome (TOS) is caused by compression of the brachial plexus or subclavian artery or vein in the region of the neck and shoulder girdle. The neurovascular bundle may be compressed at multiple sites: costoclavicular space, interscalene triangle, insertion of the pectoralis minor into the coracoid process. More than 90% of the patients present with neurologic symptoms: pain, paraesthesias or arm and hand weakness and 10% also have vascular problems. The diagnosis of TOS is always difficult and depends on careful clinical study of patients. For the neurological type of TOS, electromyograms, arteriograms and venograms are not helpful. The value of Doppler study and of arteriography is demonstrated in the present case of a woman with a five month history of pain and paraesthesias of the arm and hand, who shoved sudden occlusion of left humeral artery. Roentgenograms showed the presence of a well developed left cervical rib. Doppler study and arteriography showed the compression of subclavian artery with the arm abduction manoeuver. After first rib resection and humeral artery thrombectomy there was a complete return of humeral artery flow and of all neurologic functions. Thus the role of first cervical rib or other bone and muscular structures must be emphasyzed both in the brachial and in the subclavian artery or vein compression. Embolization of the axillary or humeral artery should be corrected as soon as possible when the cervical rib is corrected.
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