Left Common Carotid Artery Agenesis With Independent Origins of the External and Internal Carotid Arteries From the Aortic Arch: A Rare Case in a Patient With Ankylosing Spondylitis

Ahmed M AlAni; Ahmad N Al-Ekeer; Jouhar J Kolleri; Abdalla Omer Maki

doi:10.7759/cureus.28456

Left Common Carotid Artery Agenesis With Independent Origins of the External and Internal Carotid Arteries From the Aortic Arch: A Rare Case in a Patient With Ankylosing Spondylitis

Cureus. 2022 Aug 26;14(8):e28456. doi: 10.7759/cureus.28456. eCollection 2022 Aug.

Authors

Ahmed M AlAni¹, Ahmad N Al-Ekeer², Jouhar J Kolleri², Abdalla Omer Maki²

Affiliations

¹ Radiology Department, Hamad General Hospital, Doha, QAT.
² Clinical Imaging Department, Hamad Medical Corporation, Doha, QAT.

Abstract

The agenesis of the left common carotid artery, with independent origins of the external and internal carotid arteries from the aortic arch, is a well-described but extremely rare congenital anomaly. We present a case of agenesis of the left common carotid artery with the independent origin of the left internal and left external arteries from the arch of the aorta in a patient with ankylosing spondylitis which was depicted by CT angiogram and magnetic resonance angiography. The diagnosis of this anatomical variant especially before interventional procedures is of great importance, as it could complicate the catheterization of these arteries.

Keywords: ankylosing spondilytis; aortic arch; ct angiogram; left common carotid artery agenesis; magnetic resonance angiography (mra); rare anatomical variant.

Publication types

Case Reports