Aberrant right subclavian artery aneurysm


Aberrant right subclavian artery is the most common aortic arch anomaly. Aneurysmal dilatation of the proximal portion of the aberrant right subclavian artery is common and referred to as Kommerell diverticulum, which appears as bulbous enlargement of the proximal subclavian artery at its origin from the aortic arch, posterior to the esophagus.