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.
|Original language||English (US)|
|Number of pages||5|
|Journal||American Journal of Neuroradiology|
|State||Published - Aug 1 2004|
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Clinical Neurology