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 |