Location of 146 large and giant ICA aneurysms in 146 patients
| Extradural | 87 (60%) |
| Cavernous segment | 86 (59%) |
| Petrosal segment | 1 (1%) |
| Intradural | 59 (40%) |
| Hypophyseal segment | 15 (10%) |
| Ophthalmic segment | 15 (10%) |
| Posterior communicating artery | 4 (3%) |
| Supraclinoid ICA dissection | 4 (3%) |
| Supraclinoid other | 18 (12%) |
| ICA bifurcation | 3 (2%) |