Right sided aortic arch

Discussion:

A type II right aortic arch, in some references, is more frequent than a type I right aortic arch. The proximal portion of the embryologic left arch forms the left common carotid artery, which arises as the first branch of the aorta. The distal portion of the left arch may persist as an enlargement, the so-called diverticulum of Kommerell.

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