Tracheobronchial Arterial Variants of Vertebral Artery Origin and Bronchovertebral Arterial Anastomoses

Overview

Journal Surg Radiol Anat

Specialties Anatomy & Histology
General Surgery
Radiology

Date 2022 Mar 23

PMID 35320404

Authors

Philippe Gailloud

Affiliations

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Abstract

Purpose: This report describes a series of angiographic observations of tracheobronchial arterial variants and discusses their clinical implications.

Methods: The angiographic features of eleven aberrant tracheal or bronchial arteries are reported, including four variants originating from the vertebral artery and two cases of bronchovertebral anastomosis. An additional observation of thyrothymic artery illustrates the discussion of the mechanisms involved in the development of these variants.

Results: Tracheobronchial arterial variants are predominantly left-sided variants (9 out of 11). They are linked to dominant paratracheal arterial connections, particularly the lateral longitudinal anastomosis. Unusual bronchial arteries of vertebral origin show a strong association with aberrant left vertebral arteries of aortic or proximal subclavian origin.

Conclusion: This report presents a spectrum of tracheo-broncho-vertebral variations and emphasizes the role of previously described paratracheal arterial anastomoses in their formation. These variants can play a critical role during hemoptysis embolotherapy, either as an occult source of hemorrhage or as a risk factor for devastating complications.

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