Fig. 1.

( A ) Cervical rib with subclavian artery and middle and inferior trunks overlying following anterior scalenotomy. ( B ) Blue dash line indicating insertion of anterior scalene to cervical rib.

( A ) Cervical rib with subclavian artery and middle and inferior trunks overlying following anterior scalenotomy. ( B ) Blue dash line indicating insertion of anterior scalene to cervical rib.