[Extracranial aneurysm of the internal carotid artery]

The Authors present a case of extracranial internal carotid aneurysm of atherosclerotic nature. They review the most common pathogenetic factors of this uncommon disease and they focus attention on its natural history. The neurological complications in untreated patients are very high (50-70%). The treatment should be carried out with a revascularization technique after removal of the aneurysm; leaving ligature for difficult situations or to memories of the past.