Aneurysms of Basilar Bifurcation: Report of Two Cases

The authors report two cases of aneurysms of basilar bifurcation approached by modified frontolateral transsylvian route: each aneurysm was clipped successfully through the space between internal carotid artery and posterior communicating artery in case 1 and the space between internal carotid artery, posterior communicating artery and oculomotor nerve in case 2. Historical background and surgical approaches are discussed.