J Korean Neurosurg Soc.  1997 Aug;26(8):1154-1157.

Aneurysm at the Origin of the Uncal Artery Arising from the Internal Carotid Artery

• Kwon SC
• Park SK
• Kwon JD
• Shin HS
• Kim SJ

Abstract

An aneurysm arising from the intracranial portion of the internal carotid artery(ICA) is usually found at the junction of the ophthalmic, superior hypophyseal, posterior communicating or anterior choroidal artery, or at the bifurcation of the internal carotid, but very rarely at the junction of the persistent trigeminal artery. We present a case of a 49-year-old man who presented with a massive subarachnoid hemorrhage, with large intracerebral hematoma due to rupture of the aneurysm originating from the distal portion of the internal carotid artery. During surgery, we found that the aneurysm was originated at the junction of the internal carotid artery and the artery arising from the distal to anterior choroidal artery. We considered this artery to be an anatomical variant of the uncal artery(UA) arising from the internal carotid artery.

Keyword

Internal carotid artery; Aneurysm; Uncal artery

MeSH Terms

Aneurysm*
Arteries*
Carotid Artery, Internal*
Choroid
Hematoma
Humans
Middle Aged
Rupture
Subarachnoid Hemorrhage