Congenital Aplasia of the Common Carotid Artery: A Comprehensive Review

Figure 3

Embryologic basis of the separated origin of the right external carotid (ECA) and internal carotid (ICA) arteries and right-sided cervical aortic arch (RCAA) in modified Myers’ scheme [10] (a), and course and branches of the RCAA in modified Beavan’s and Fatti’s scheme [36] (b). Note: Obliterated and persisted parts are light- and dark gray colored, respectively. I–VI, primitive aortic arches; SA, subclavian artery; CCA, common carotid artery; PT, pulmonary trunk.

(a)

(b)