Abstract
An abnormal origin of the left common carotid artery from the initial portion of the brachiocephalic trunk was found in the superior mediastinum in a 81-year-old Caucasian male cadaver during dissection practice. We report on the exact morphology of that variant that is appeared in an incidence of 0,2% in the literature. We discuss the relative literature and pay attention on the significance of such a variation for clinicians in its recognition and protection.
Highlights
Increasing activity in the fields of cardiac and vascular surgery has served to revive interest in the developmental and adult anatomy of the aortic arches and the great vessels derived therefrom
In our work we present a rare type of left common carotid artery origin from the initial portion of the brachiocephalic trunk
They may branch from the beginning of the arch of the upper part of the ascending aorta; the distance between these origins varies, the most frequent being approximation of the left common carotid artery to the brachiocephalic trunk [2]
Summary
Increasing activity in the fields of cardiac and vascular surgery has served to revive interest in the developmental and adult anatomy of the aortic arches and the great vessels derived therefrom. An analysis of variation in branches from 1000 aortic arches showed the following findings: In 27%, the left common carotid artery originates from the brachiocephalic trunk. The most common pattern in 65% is formed by the separate origination of three branches springing from the vessel's convex aspect: the brachiocephalic trunk, left common carotid and left subclavian arteries [3]. We dissected a 31-year-old, Caucasian, male, formalinefixed cadaver. Having obtained a clear view of the great vessels we noticed the presence of a left common carotid artery arising from the left surface of the origin site of the brachiocephalic trunk (Figure 1)
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