Location, aneurysm type, and rupture status of 117 aneurysms (101 patients)
| Locationa | No. of Cases | Total (n = 117) |
Bifurcation (n = 90) |
Sidewall (n = 27) |
|||
|---|---|---|---|---|---|---|---|
| Unruptured | Ruptured | Unruptured | Ruptured | Unruptured | Ruptured | ||
| High-risk location | |||||||
| PcomA | 12 (10%) | 4 | 8 | 3 | 3 | 1 | 5 |
| BA | 11 (9%) | 8 | 3 | 8 | 2 | 0 | 1 |
| VA | 1 (1%) | 0 | 1 | 0 | 0 | 0 | 1 |
| ACA | 8 (7%) | 3 | 5 | 2 | 5 | 1 | 0 |
| AcomA | 28 (24%) | 7 | 21 | 7 | 20 | 0 | 1 |
| Subtotal | 60 (51%) | 22 | 38 | 20 | 30 | 2 | 8 |
| Low-risk location | |||||||
| MCA | 36 (31%) | 27 | 9 | 23 | 9 | 4 | 0 |
| ICA | 21 (18%) | 13 | 8 | 3 | 5 | 10 | 3 |
| Subtotal | 57 (49%) | 40 | 17 | 26 | 14 | 14 | 3 |
| Total | 117 (100%) | 62 | 55 | 46 | 44 | 16 | 11 |
Note:—AcomA indicates anterior communicating artery; PcomA, posterior communicating artery; VA, vertebral artery.
a
ICA includes the internal carotid, ophthalmic, anterior choroidal arteries and the carotid tip; ACA includes the anterior cerebral and pericallosal arteries; BA includes the basilar, PICA, and superior cerebellar arteries.