Abstracto

Horner's Syndrome Caused by Internal Carotid Artery Collapse after Clipping of an Internal Carotid-Posterior Cerebral Artery Aneurysm.

Chuman Hideki, Nao-i Nobuhisa, Tamura Koichiro

A 59-year-old woman presented with left blepharoptosis after clipping for treatment of subarachnoid hemorrhage from a ruptured internal carotid-posterior cerebral artery aneurysm. Neuro-ophthalmological examination revealed postganglionic Horner?s syndrome on the left side associated with left optic tract syndrome. The left optic tract near the aneurysm was damaged directly or indirectly as a result of ischemic insult during the clipping procedure. Aneurysmal rupture during clipping procedures could lead to extracranial internal carotid artery collapse and occlusion, causing ischemic damage to the sympathetic plexus.