An aberrant right subclavian artery in transbrachial cerebral angiography

Abstract

We report two cases of aberrant right subclavian artery (ARSCA) found by transbrachial cerebral angiography. ARSCA originates from the descending aorta, distal to the left subclavian artery, with a reported incidence of 0.4 to 2%. In our hospital, ARSCA was found in 0.16% of all cases in which transbrachial cerebral angiography was performed in the last 6 years. In performing cerebral angiography from the right brachial artery, this anomaly should be considered when a catheter will go only into the descending aorta.