Saccular aneurysm associated with proximal basilar artery fenestration. Case report.

: When an aneurysm arises from a limb of an arterial fenestration at the vertebrobasilar junction or in the proximal third of the basilar artery, its surgical management can be an intriguing problem. We report here a case of such an aneurysm successfully clipped through a right subtemporal transtentorial approach.