Table 1.
Location of aneurysms.
| Location | Number | Number | Number |
|---|---|---|---|
| of total aneurysms | of ruptured aneurysms | of unruptured aneurysms | |
| (Number of previously | (Number of previously | (Number of previously | |
| treated aneurysms) | treated aneurysms) | treated aneurysms) | |
| n=136 (22) | n=54 (7) | n=82 (15) | |
|
| |||
| ACA/distal | 3 (1) | 2 (1) | 1 |
|
| |||
| ACA/ACom | 10 (1) | 6 | 4 (1) |
|
| |||
| ACA/A1 | 1 | 0 | 1 |
|
| |||
| MCA/bifurcation | 11 (4) | 7 (2) | 4 (2) |
|
| |||
| MCA/M1 | 1 | 0 | 1 |
|
| |||
| ICA/bifurcation | 7 (2) | 2 (1) | 5 (1) |
|
| |||
| ICA/anterior choroidal | 2 | 2 | 0 |
|
| |||
| ICA/PCom | 21 (3) | 9 | 12 (3) |
|
| |||
| ICA/paraclinoid | 35 (4) | 3 | 32 (4) |
|
| |||
| ICA/cavernous | 2 | 0 | 2 |
|
| |||
| BA/apex | 23 (6) | 12* (3) | 11 (3) |
|
| |||
| BA/SCA | 6 (1) | 1 | 5 (1) |
|
| |||
| BA/trunk | 3 | 1 | 2 |
|
| |||
| VB | 3 | 3 | 0 |
|
| |||
| V4 | 1 | 1 | 0 |
|
| |||
| V4/PICA | 7 | 5 | 2 |
|
| |||
| ACA, anterior cerebral artery; ACom, anterior communicating artery; a1, A1 segment of ACA; MCA, middle cerebral artery; | |||
| M1, M1 segment of MCA; ICA, internal carotid artery; PCom, posterior communicating artery; BA, basilar artery; | |||
| SCA, superior cerebellar artery; VBJ, vertebrobasilar junction; V4, intracranial vertebral artery; PICA, posterior cerebellar artery | |||
| *; two unruptured de novo aneurysms in the face of subarachnoid hemorrhage were included. | |||