Segmental agenesis of the internal carotid artery distal to the posterior communicating artery leading to the definition of a new embryologic segment

Philippe Gailloud; Richard E Clatterbuck; Jean H D Fasel; Rafael J Tamargo; Kieran J Murphy

Segmental agenesis of the internal carotid artery distal to the posterior communicating artery leading to the definition of a new embryologic segment

AJNR Am J Neuroradiol. 2004 Aug;25(7):1189-93.

Authors

Philippe Gailloud¹, Richard E Clatterbuck, Jean H D Fasel, Rafael J Tamargo, Kieran J Murphy

Affiliation

¹ Division of Interventional Neuroradiology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.

PMID: 15313707
PMCID: PMC7976531

Abstract

We report a case of segmental agenesis of the right internal carotid artery (ICA) in a 53-year-old woman, associated with a saccular aneurysm of the left anterior cerebral artery (A1 segment) presenting with a right hemispheric transient ischemic attack. The agenetic segment was located distal to the origin of the posterior communicating artery (PComA), as documented both angiographically and by direct surgical inspection. This observation suggests the existence of a previously unrecognized embryologic segment of the ICA, located between the PComA origin and the terminal bifurcation of the ICA into the anterior and middle cerebral arteries.

Publication types

Case Reports

MeSH terms

Angiography, Digital Subtraction*
Carotid Artery, Internal / abnormalities*
Carotid Artery, Internal / embryology*
Carotid Artery, Internal / surgery
Cerebral Angiography*
Dominance, Cerebral / physiology*
Female
Humans
Image Processing, Computer-Assisted*
Intracranial Aneurysm / diagnostic imaging
Intracranial Aneurysm / surgery*
Ischemic Attack, Transient / diagnostic imaging
Ischemic Attack, Transient / surgery*
Middle Aged
Posterior Cerebral Artery / abnormalities*
Posterior Cerebral Artery / diagnostic imaging
Posterior Cerebral Artery / embryology*
Posterior Cerebral Artery / surgery
Surgical Instruments
Tomography, Spiral Computed*