Characteristics of blister-like aneurysms
| Characteristic | Description |
|---|---|
| Localization | Nonbranching site, proximal |
| Dimension | Small, <3 mm (within 24 hours of SAH) |
| Shape | Conical, wide-neck |
| Appearance | Dissecting |
| Tendency to rebleed | High, due to friable walls |
| Tendency to grow | High |