Clinical and radiological characteristics in 40 patients with 50 aneurysms
| Characteristic | ||||
|---|---|---|---|---|
| Sex | 30 (75%) F, 10 (25%) M | |||
| Age (years) | 40–79 (mean 57) | |||
| Clinical presentation (40 patients) | Subarachnoid hemorrhage | 5 (12.5%) | ||
| No hemorrhage | 35 (87.5%) | Headache | 15 (37.5%) | |
| Cranial nerve palsies | 6 (15%) | |||
| Hemiparesis | 1 (3%) | |||
| Other unrelated symptoms | 13 (32%) | |||
| Aneurysm location (50 aneurysms) | Paraophthalmic ICA | 22 (44%) | ||
| PcomA | 10 (20%) | |||
| Cavernous ICA | 7 (14%) | |||
| A1/A2 | 3 (6%) | |||
| Middle cerebral artery | 1 (2%) | |||
| Posterior cerebral artery | 1 (2%) | |||
| Basilar artery | 3 (6%) | |||
| PICA | 2 (4%) | |||
| SCA | 1 (2%) | |||
| Aneurysm size (50 aneurysms) | Small (≤15 mm) | 43 (86%) | ||
| Large (16–24 mm) | 5 (10%) | |||
| Giant (≥25 mm) | 2 (4%) | |||
| Aneurysm neck to sac ratio (50 aneurysms) | 0.3 | 3 (6%) | ||
| 0.4 | 6 (12%) | |||
| 0.5 | 13 (26%) | |||
| 0.6 | 12 (24%) | |||
| 0.7 | 2 (4%) | |||
| 0.8 | 3 (6%) | |||
| 0.9 | 3 (6%) | |||
| 1.0 | 4 (8%) | |||
| Fusiform | 4 (8%) | |||
ICA, internal carotid artery; PcomA, posterior communicating artery; PICA, posterior inferior cerebellar artery; SCA, superior cerebellar artery.