Summary of characteristics of 22 distal ACA aneurysms
| Characteristic | Ruptured | Unruptured |
|---|---|---|
| Size (mm) | ||
| Mean ± SD (range) | 6.2 ± 3.2 (2.8–12) | 9.2 ± 7.8 (3–25) |
| <7 | 7 | 5 |
| 7–14 | 6 | 2 |
| 14–25 | − | 1 |
| >25 | − | 1 |
| Location | ||
| A2 | 3 | 2 |
| A3 | 10 | 6 |
| A4/5 | − | 1 |
| Origin at a branching point | ||
| Anterior internal frontal artery | 2 | − |
| Callosomarginal artery | 7 | 5 |