Relationship between the location and number of the aneurysms
| Location | No. | % |
|---|---|---|
| Middle cerebral artery | 11 | 22.4% |
| Anterior communicating artery | 9 | 18.4% |
| Basilar artery | 5 | 10.2% |
| Posterior communicating artery | 5 | 10.2% |
| Bifurcation of the internal carotid artery | 5 | 10.2% |
| Internal carotid artery | 3 | 6.1% |
| Pericallosal artery | 2 | 4.1% |
| Others | 9 | 18.4% |
| Total | 49 | 100% |