J Korean Neurosurg Soc.  1996 Dec;25(12):2534-2539.

Incidental Discovery of Angiogram-negative Aneurysm during Aneurysm Surgery: Case Report

• Yee GT
• Rhee BA
• Lim YJ
• Kim TS
• Kim GK
• Leem W

Abstract

The presently available neuroradiological techniques including computed tomography and 4-vessel angiography, fail to identify any causes in 13% to 22% of patients with a subarachnoid hemorrhage. Recently, we experienced two small unexpected internal carotid artery aneurysms during the anterior communicating artery aneurysm and basilar tip aneurysm surgery respectively. In general, the approach for aneurysm surgery was confined to the local aneurysm site with local cisternal opening. But we had performeda wide cisternal opening for the anterior communicating and basilar tip aneurysm surgery and we found unexpected angiogrram-negative aneurysm. These findings lead us to propose to a surgical approach of usual intracranial aneurysms. Therefore we recommend the approach of opening predilection sites(including MCA knee portion, ICA bifurcation area) of intracranial aneurysms during all intracranial aneurysm surgery.

Keyword

Angiogram-Negative; Intracranial aneurysm; Subarachnoid hemorrhage; Incidental

MeSH Terms

Aneurysm*
Angiography
Carotid Artery, Internal
Humans
Incidental Findings*
Intracranial Aneurysm
Knee
Subarachnoid Hemorrhage