Embryological basis of coarctation in cervical aortic arch: Ductus caroticus anomaly

ABSTRACT

Coarctation of the cervical aortic arch (CAA), though rare, is a clinical entity of embryological significance. Based on Rathke's aortic arch diagrams and Edward's concept of functioning double aortic arch, we are postulating that the coarctation in a CAA occurs due to partial involution of the dorsal aorta developed from the "ductus caroticus". Hence coarctation in CAA should be classified as a "clinically significant aortic arch anomaly of ductus caroticus origin". Conversely, location of coarctation in CAA substantiates the theory that embryogenesis of CAA is due to aortic arch development from the third or second branchial arch vessel, rather than the usual fourth arch vessel

RESUMEN

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