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.