Absent right internal carotid associated with posterior cerebral artery aneurysm: A case report

Abdullah Ali AlQarni; Ali Mohammed AlQarni; Mohammed Fatani; Ali Mekbel Aldahmashi; Jaber A Alfaifi

doi:10.1016/j.amsu.2022.104257

Absent right internal carotid associated with posterior cerebral artery aneurysm: A case report

Ann Med Surg (Lond). 2022 Jul 31:80:104257. doi: 10.1016/j.amsu.2022.104257. eCollection 2022 Aug.

Authors

Abdullah Ali AlQarni¹, Ali Mohammed AlQarni², Mohammed Fatani³, Ali Mekbel Aldahmashi⁴, Jaber A Alfaifi⁵

Affiliations

¹ Department of Medicine, College of Medicine, University of Bisha, P.O. Box 61922, Bisha, Saudi Arabia.
² Department of Radiology, Prince Mshiari Bin Saud Hospital, Al-Baha, Saudi Arabia.
³ Medical Imaging Department, King Saud Medical City, Riyadh, 12746, Saudi Arabia.
⁴ Diagnostic Radiology and Nuclear Medicine, University of Maryland Medical Center, 22 S Greene St, Baltimore, MD, 21201, USA.
⁵ Department of Child Health, College of Medicine, University of Bisha, Saudi Arabia.

Abstract

Introduction: and importance: An uncommon condition is congenital unilateral agenesis of the internal carotid artery (ICA). Most instances are asymptomatic due to adequate collateral circulation via the circle of Willis, but individuals might potentially manifest (or show) ischemic or aneurysmal dilatation hemorrhagic cerebrovascular lesions. The bony carotid canal must be absent from distinguishing this abnormality from chronic ICA blockage. Neuroradiologists must be aware of this condition since these patients have a higher risk of developing numerous intracranial diseases.

Case presentation: This report focuses on the case of 39 years male with an absent right internal carotid artery with posterior cerebral artery aneurism whose main symptoms were on and off headaches. In a discussion that includes demographic characteristics, clinical manifestations, radiologic findings, and an assessment of the risks associated with ICA agenesis.

Conclusion: Congenital agencies absence of carotid artery is rare variant anatomy although most of the time they are asymptomatic, it is known to increase the risk of aneurism and therefore, they need screening and close follow up.

Keywords: Internal carotid artery; Neurology; Neuroradiology; Vascular intervention.

Publication types

Case Reports