Variations in the anatomy of the branches of an aortic arch -- two cases.

Variations in the anatomy of the branches of the aortic arch (AA) are well known. But in ordinary surgical practice, being asymptomatic, most of these anatomical variations remain unrecognized. As vascular pathologies proceed affecting the innominate artery (IA) and/or its branches, including the left common carotid artery (CCA) and subclavian artery (SA) — they are noticed and detected. In our paper, two cases of the origin of left CCA from IA are presented. [ABSTRACT FROM AUTHOR]