Abstract

Aneurysms in the cavernous segment of internal carotid artery correspond from 2% to 9% of all intracranial aneurysms and are completely extradural, presenting a low risk of progressing to a spontaneous subarachnoid hemorrhage, thus having a relatively low mortality and morbidity. Its cause may be idiopathic, traumatic, iatrogenic or infectious. The symptomatology is associated with the size of the aneurysm and thrombosis within, may be asymptomatic or bleeding, meningeal signs, focal deficit, confusion, drowsiness, especially severe headache, which may be coming from the compression of cranial nerves present inside the cavernous sinus with retro-orbital pain or changes in extra ocular motility. The dissection of the breast is challenging and can injure these nerves. The authors present the case of a woman with unruptured aneurysm in unusual segment by topography, with indicative injury to cranial nerves.

Keywords

aneurysm unruptured, cavernous sinus, oculomotor nerve