Table 1.

Location giant aneurysms. Abbreviations: ICA = internal carotid artery; PCoA = posterior communicating artery; MCA = middle cerebral artery; ACoA = anterior communicating artery; PCA = posterior cerebral artery; SCA = superior cerebellar artery; PICA = posterior inferior cerebellar artery.

Anterior Circulation	N	%
Cavernous ICA	19	13.5%
Supraclinoid ICA	18	12.8%
Ophthalmic	15	10.6%
Superior Hypophyseal	5	3.5%
PCoA	5	3.5%
MCA	23	16.3%
ACoA	13	9.2%
Pericallosal	2	1.4%
Posterior Circulation	N	%
Basilar Bifurcation	14	9.9%
PCA	7	5.0%
SCA	2	1.4%
Basilar Trunk	9	6.4%
PICA	4	2.8%
Vertebral Artery	5	3.5%
Total	141