Table 2:

Five-year cumulative rupture rates from the ISUIA trial for patients without a history of SAH

Artery	<7 mm	7–12 mm	13–24 mm	≥25 mm
Cavernous carotid	0%	0%	3%	6.4%
ACA/MCA/ICA	0%	2.6%	14.5%	40%
PCA, PcomA, vertebrobasilar	2.5%	14.5%	18.4%	50%

Note:—PCA indicates posterior cerebral artery; PcomA, posterior communicating artery; ACA, anterior cerebral artery.