Characteristics of aneurysms retreated
| Characteristic | <1 An, <12 Mo | 1 An, 12–18 Mo | 18 Mo–5 Yr | >5 yr |
|---|---|---|---|---|
| No. treated | 41 | 6 | 15 | 10 |
| Lumen size | ||||
| Small | 19 | 3 | 9 | 2 |
| Medium | 16 | 1 | 4 | 7 |
| Large | 6 | 2 | 2 | 1 |
| Aneurysm location | ||||
| ACA | 13 | 3 | 5 | 4 |
| PCA | 17 | 1 | 3 | 3 |
| ICA | 4 | 1 | 2 | 1 |
| MCA | 2 | 3 | ||
| Posterior artery | 5 | 1 | 2 | 2 |
| Initial clinical conditions | ||||
| Initial hemmorhage | 31 | 5 | 11 | 7 |
| Unruptured | 10 | 1 | 4 | 3 |
Note:—An indicates aneurysm; ACA, anterior cerebral artery; PCA, posterior communicating artery; ICA, internal carotid artery; MCA, middle cerebral artery.