Aortic Arch-Occlusive Disease

The aortic arch, also referred to as the supra-aortic trunk includes the innominate artery, the subclavian arteries, as well as the common carotid arteries up until their bifurcations. As the aortic arch progresses from an anterior to a posterior position, so do the origins of the great vessels. 20–30 % of patients show anatomic variations with the most common being the bovine arch, in which the innominate artery and the left carotid arise from a common ostium or a common trunk. Other variations seen are: