open access

Vol 83, No 1 (2024): Folia Morphologica
Original article
Submitted: 2023-01-24
Accepted: 2023-03-01
Published online: 2023-03-02
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Analysis of the regional anatomy of the retro-oesophageal right subclavian artery and surrounding structures

Shigeyuki Esumi1, Yoshihiro Kumagai1, Yoshikazu Koba1, Takaichi Fukuda1
·
Pubmed: 36896645
·
Folia Morphol 2024;83(1):44-52.
Affiliations
  1. Department of Anatomy and Neurobiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan

open access

Vol 83, No 1 (2024): Folia Morphologica
ORIGINAL ARTICLES
Submitted: 2023-01-24
Accepted: 2023-03-01
Published online: 2023-03-02

Abstract

Background: The retro-oesophageal right subclavian artery (RRSA) is a congenital anomalous branching of the arch of the aorta. Because its incidence is very low, it has not been fully understood how the RRSA develops during embryogenesis, and thus accumulation of observed findings in newly found cases is important to elucidate the aetiology of the RRSA.

Materials and methods: We encountered a case of the RRSA during the course of gross anatomy dissection for medical students.

Results: The main findings in the present observations are that (a) the RRSA arose from the right side wall of the arch of the aorta as its last branch; (b) the detected RRSA was directed to the right and upward between the oesophagus and vertebral column; (c) the right vertebral artery branched from the RRSA and entered the sixth cervical foramen transversarium; (d) the suprema intercostal artery branched from the costocervical trunk on both sides and its distal branches were distributed to the first and second intercostal spaces; and (e) both sides of bronchial arteries originated from the thoracic aorta.

Conclusions: The present study gives further information about the morphological details of the RRSA leading to better understanding of its developmental process.

Abstract

Background: The retro-oesophageal right subclavian artery (RRSA) is a congenital anomalous branching of the arch of the aorta. Because its incidence is very low, it has not been fully understood how the RRSA develops during embryogenesis, and thus accumulation of observed findings in newly found cases is important to elucidate the aetiology of the RRSA.

Materials and methods: We encountered a case of the RRSA during the course of gross anatomy dissection for medical students.

Results: The main findings in the present observations are that (a) the RRSA arose from the right side wall of the arch of the aorta as its last branch; (b) the detected RRSA was directed to the right and upward between the oesophagus and vertebral column; (c) the right vertebral artery branched from the RRSA and entered the sixth cervical foramen transversarium; (d) the suprema intercostal artery branched from the costocervical trunk on both sides and its distal branches were distributed to the first and second intercostal spaces; and (e) both sides of bronchial arteries originated from the thoracic aorta.

Conclusions: The present study gives further information about the morphological details of the RRSA leading to better understanding of its developmental process.

Get Citation

Keywords

gross anatomy, arteria lusoria, bronchial artery, dorsal aorta, non-recurrent laryngeal nerve

About this article
Title

Analysis of the regional anatomy of the retro-oesophageal right subclavian artery and surrounding structures

Journal

Folia Morphologica

Issue

Vol 83, No 1 (2024): Folia Morphologica

Article type

Original article

Pages

44-52

Published online

2023-03-02

Page views

459

Article views/downloads

422

DOI

10.5603/FM.a2023.0017

Pubmed

36896645

Bibliographic record

Folia Morphol 2024;83(1):44-52.

Keywords

gross anatomy
arteria lusoria
bronchial artery
dorsal aorta
non-recurrent laryngeal nerve

Authors

Shigeyuki Esumi
Yoshihiro Kumagai
Yoshikazu Koba
Takaichi Fukuda

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