Operations for medially projecting intracranial carotid artery aneurysms. Morbidity and the relation to perforating arteries
摘要
Introduction: Although laterally projecting aneurysms from the intracranial carotid artery (e.g. IC-PCom aneurysm) can easily be clipped through a conventional pterional craniotomy, those projecting medially or purely posteriorly from the carotid artery are often difficult to clip to its ideal part of the aneurysmal neck due to the presence of the small branches (including the anterior choroidal artery) supplying important structures such as optic nerve, optic tract, midbrain, thalamus or hypothalamus.