Patient and aneurysm characteristics
| All Patients | Patients Treated with PVO | Patients Treated by Coiling | |
|---|---|---|---|
| No. patients | 56 | 26 | 30 |
| No. men | 20 (36%) | 7 (27%) | 13 (43%) |
| Mean age (yr) | 56.7 | 55.8 | 57.5 |
| Median age, range (yr) | 57.5, 10–81 | 58.6, 10–79 | 56.5, 38–81 |
| Mean follow-up (mo) | 42.7 | 32.0 | 51.9 |
| Median follow-up, range (mo) | 28.0, 0–179 | 25.5, 0–126 | 35.8, 0–179 |
| Mean aneurysm size (mm) | 26 | 26 | 26 |
| Median aneurysm size, range (mm) | 25, 5–55 | 25, 15–40 | 26, 5–55 |
| Anterior circulation aneurysms | 41 | 20 | 21 |
| Cavernous sinus | 20 | 18 | 2 |
| Superior hypophyseal artery | 5 | 1 | 4 |
| AcomA | 4 | 0 | 4 |
| MCA | 4 | 0 | 4 |
| Ophthalmic artery | 4 | 0 | 4 |
| PcomA | 2 | 0 | 2 |
| Carotid artery tip | 1 | 1 | 0 |
| ACA | 1 | 0 | 1 |
| Posterior circulation aneurysms | 15 | 6 | 9 |
| PICA | 6 | 3 | 3 |
| SCA | 4 | 1 | 3 |
| Basilar artery tip | 3 | 0 | 3 |
| Vertebral artery | 1 | 1 | 0 |
| Vertebral artery junction | 1 | 1 | 0 |