Abstract
Anatomical variations of the arch of the aorta including its branching pattern are important for diagnostic, surgical, and interventional procedures of the thorax and neck, and the aim of the study is to analyze the anatomical variations of the arch of the aorta in correlation with the development of the arch of the aorta. The purpose of this study is to review the anatomical variations including its branching pattern of the arch of the aorta in fifty adult human cadavers (M: 42, F: 8) dissected in the department of anatomy, Siddhartha Medical College, Vijayawada, for five consecutive years from 2013 to 2018. The arch of the aorta was left sided in all the 50 cadavers. The three branches of the arch of the aorta were normal in 41 cadavers in the present study. In 9 cadavers, variations were observed. In four male cadavers and in a female cadaver, the two branches of the arch of the aorta were the common trunk of the brachiocephalic trunk and the left common carotid artery along with the left subclavian artery. In two male cadavers, the branches were four, including the extra origin of the left vertebral artery from the arch of the aorta. In a female cadaver, the three branches of the arch of the aorta were as follows: the common trunk of the brachiocephalic trunk and the left common carotid artery, the left vertebral artery and the left subclavian artery. In a male cadaver, the four branches were the one additional branch of the right subclavian artery as its fourth branch of the arch of aorta. Head-and-neck surgeons and interventional radiologists should be aware of the variations of the arch of the aorta. Computed tomography angiography is a reliable imaging method for demonstrating the variations of the arch of the aorta.
Published Version
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