Supernumerary transitional cervicothoracic vertebra and interrupted left subclavian artery reconstituted by a left vertebral arteria lusoria crossing a foramen transversarium.

Authors

Philippe Gailloud
Allison L. Machnicki, Philadelphia College of Osteopathic MedicineFollow

Document Type

Article

Publication Date

2-19-2026

Abstract

We report an observation of a right aortic arch with an isolated left subclavian artery (Edwards III-C) occurring in association with a supernumerary transitional cervicothoracic vertebra. As a unique feature, reconstitution of the left subclavian artery involved a left vertebral arteria lusoria, resulting in the formation of a composite anomalous vessel that mimicked an aberrant subclavian artery, followed a retroesophageal course, and passed through the foramen transversarium of the supernumerary vertebra.

Publication Title

Surgical and Radiologic Anatomy

Volume

48

Issue

1

First Page

72

PubMed ID

41711954

Comments

This article was published in Surgical & Radiologic Anatomy, Volume 48, Issue 1.

The published version is available at https://doi.org/10.1007/s00276-026-03841-x.

Copyright © 2025 The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature. .

Recommended Citation

Gailloud, Philippe and Machnicki, Allison L., "Supernumerary transitional cervicothoracic vertebra and interrupted left subclavian artery reconstituted by a left vertebral arteria lusoria crossing a foramen transversarium." (2026). PCOM Scholarly Works. 2355.
https://digitalcommons.pcom.edu/scholarly_papers/2355 DOI: https://doi.org/10.1007/s00276-026-03841-x