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Anterior clinoid process pneumatization and internal carotid artery protrusion frequencies n (%)
| Anterior clinoid process pneumatization |
Internal carotid artery protrusion |
||||
| None | Right | Left | Bilateral | Total | |
| None | 188 (63.1) | 15 (5) | 23 (7.7) | 72 (24.2) | 298 (100) |
| Right | 11 (35.5) | 4 (12.9) | 3 (9.7) | 13 (41.9) | 31 (100) |
| Left | 8 (30.8) | 3 (11.5) | 5 (19.2) | 10 (38.5) | 26 (100) |
| Bilateral | 9 (20) | 5 (11.1) | 3 (6.7) | 28 (62.2) | 45 (100) |
| Total | 216 (54) | 27 (6.8) | 34 (8.5) | 123 (30.8) | 400 (100) |
