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open access eISSN 2093-3673

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Anat Cell Biol

Published online February 28, 2024

https://doi.org/10.5115/acb.23.302

Copyright © Korean Association of ANATOMISTS.

Bilateral unusual branching pattern of the external carotid artery in a human cadaver

Stefan Trifonov1 , Miroslav Dobrev1 , Preslava Hristova2 , Iren Bogeva-Tsolova1,3

1Department of Anatomy, Histology, Cytology and Biology, Faculty of Medicine, Medical University – Pleven, Pleven, 2Department of Microbiology and Virology, Faculty of Pharmacy, Medical University – Pleven, Pleven, 3Department of Surgery, Faculty of Medicine, Medical University – Pleven, Pleven, Bulgaria

Correspondence to:Stefan Trifonov
Department of Anatomy, Histology, Cytology and Biology, Faculty of Medicine, Medical University – Pleven, Pleven 5800, Bulgaria
E-mail: stefantrifonov@outlook.com

Received: December 21, 2023; Revised: December 31, 2023; Accepted: January 19, 2024

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Comprehensive understanding of the variations in the branching of the external carotid artery (ECA) is essential to minimizing vascular complications during cranio-facial and neck surgical procedures. We demonstrate a rare case of unusual branching of ECAs in both carotid triangles and anomalous origin of the left ascending pharyngeal artery (APA) during dissection of embalmed cadaver. The right and left common carotid arteries (CCA) bifurcated at the level of the upper border of the thyroid cartilage. The right superior thyroid artery (STA) originated anterior to the carotid bifurcation (CB), while the left STA originated from the anterior aspect of the left CCA. The right ECA trifurcated into linguofacial trunk, APA, and distal ECA, 15.7 mm from CB. On the left side, lingual artery and APA arose as a short common linguopharyngeal trunk, 1.9 mm from CB. The left facial and occipital arteries originated anteromedially and posteriorly at the same level.

Keywords: External carotid artery, Ascending pharyngeal artery, Linguofacial trunk, Superior thyroid artery, Linguopharyngeal trunk

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