DORSAL INTERNAL CAROTID-ARTERY ANEURYSM - CLASSIFICATION, PATHOGENESIS, AND SURGICAL CONSIDERATIONS

Despite the rarity of dorsal internal carotid artery (ICA) aneurysms t hey still offer surgical challenge to achieve a safe successful clippi ng due to their peculiar projection. In the past 13 years, 24 cases of dorsal ICA aneurysm were operated upon in our hospitals. Three separa te groups of such aneurysms could be identified: group 1; where the an eurysms were located most proximally at the carotid-ophthalmic region, group 3; in which the aneurysms were present most distally just proxi mal to the ICA bifurcation, and group 2; where the aneurysms were loca ted inbetween. All cases in this surgical series will be reviewed stre ssing upon the classification, pathogenesis, and surgical tactics of s uch a rare type of aneurysm.