Internal carotid artery agenesis: A case report and review of literature

Authors

Shuo Li, 1 Department of Radiology, Yale New Haven Health - Bridgeport Hospital, USA.Follow
Kusum Hooda, 1 Department of Radiology, Yale New Haven Health - Bridgeport Hospital, USA.Follow
Nishant Gupta, 2 Department of Radiology, St Vincent's Medical Center, USA.Follow
Yogesh Kumar, 1 Department of Radiology, Yale New Haven Health - Bridgeport Hospital, USA.Follow

Document Type

Article

Publication Title

The neuroradiology journal

Abstract

Congenital agenesis of the internal carotid artery is a very rare anomaly. Intracranial circulation in the involved internal carotid artery territory is maintained by collateral circulation from the contralateral internal carotid artery through the anterior communicating artery and from the vertebrobasilar system through the posterior communicating artery. Usually, patients with internal carotid artery agenesis are asymptomatic due to collateral circulation, but they may present with headache, seizures, or transient ischemic attack. Aneurysms have also been reported to be associated with this entity. Computed tomography angiography, magnetic resonance angiography, and digital subtraction angiography are commonly used modalities to make the diagnosis. Unenhanced skull base computed tomography will show the absence of carotid canal, thus differentiating from carotid hypoplasia. We report on a case of right internal carotid artery agenesis with discussion of embryogenesis, clinical presentation, and imaging findings.

First Page

186

Last Page

191

DOI

10.1177/1971400917692162

Publication Date

4-1-2017

Recommended Citation

Li, Shuo; Hooda, Kusum; Gupta, Nishant; and Kumar, Yogesh, "Internal carotid artery agenesis: A case report and review of literature" (2017). Radiology. 103.
https://scholar.bridgeporthospital.org/radiology/103

Identifier

28424012 (pubmed); PMC5433594 (pmc); 10.1177/1971400917692162 (doi)