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Anatomical variations of the aortic arch branches in a sample of Chinese cadavers: embryological basis and literature review.

Abstract：

OBJECTIVES:The aim of this study is to determine the incidence and explore the types of aortic arch branch variations found in our cadavers. METHODS:The types and incidence of aortic branch variations in 120 cadavers were analysed after careful dissection. RESULTS:One hundred and six of 120 cadavers had normal aortic arch branches and gave rise to usual branches, namely the brachiocephalic trunk, the left common carotid artery and the left subclavian artery. The remaining 14 cadavers had 2 basic types of branch variations, thus accounting for an incidence of 11.67%. A total of 9 aortic arches emitted 4 branches; the brachiocephalic trunk, the left common carotid artery, the left vertebral artery and the left subclavian artery (incidence 7.5%). The second subgroup of 5 cadavers also emitted 4 aortic branches: the right common carotid artery, the left common carotid artery, the left subclavian artery and the right subclavian artery (incidence 4.16%). In this group, the right subclavian artery sprung as a distal branch of the aortic arch (descending), thus making a vascular ring that takes a superoposterior course round the back of the trachea and the oesophagus to reach the right side. There was a single cadaver, different from the other 4 aortic branches of the second group which had a common origin for the common carotid arteries, while the left subclavian artery and distally placed right subclavian artery were present. We did not observe any Kommerell's aortic diverticula. CONCLUSIONS:The variations of aortic arch branching are complex and diverse due to varied possible alterations in the embryological processes. There is an imperative need for further research on these variations to elucidate the possible relationships with clinical diagnostic or surgical events.

journal_name

Interact Cardiovasc Thorac Surg

journal_title

Interactive cardiovascular and thoracic surgery

authors

Qiu Y,Wu X,Zhuang Z,Li X,Zhu L,Huang C,Zhuang H,Ma M,Ye F,Chen J,Wu Z,Yu X,An M,Chen R,Chen J,Guan L,Sang H,Ye Y,Han Y,Chen Z,Qin H,Zhu H,Zhou Y,Zilundu PLM,Xu D,Zhou L

doi

10.1093/icvts/ivy296

subject

Has Abstract

pub_date

2019-04-01 00:00:00

pages

622-628

issue

eissn

1569-9293

issn

1569-9285

pii

5184843

journal_volume

pub_type

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Anatomical variations of the aortic arch branches in a sample of Chinese cadavers: embryological basis and literature review.