abnormal aortic arch morphology abnormal aortic arch and aortic arch branch attachment 2010-09-29T03:29:54Z Fyler:2705 MP:0010464 MPheno.ontology any anomaly of the connection site of the aortic branches to the aortic arch, including the attachment sites for the left common carotid artery, the left subclavian artery, and the brachiocephalic trunk which further splits to form the right subclavian artery and the right common carotid artery aortic arch branch abnormality csmith