Basilar tip aneurysm Wingspan stent-assisted coil embosurgery via P1 to P1 approach.

Wide neck basilar tip aneurysms are challenging to secure with coil embosurgery despite balloon remodeling and stent-assisted coiling. In patients with favorable posterior circle of Willis anatomy, the traditional antegrade placement of two stents that span the basilar apex to both proximal posterior cerebral arteries (P1s) can be avoided by implanting a single stent across the P1s and basilar apex via a retrograde posterior communicating artery approach. This case report details the first use of the high radial force Wingspan stent placed in this fashion during basilar aneurysm coiling repair.