The LVIS/LVIS Jr. stents in the treatment of wide-neck intracranial aneurysms: multicentre registry

Abstract

BACKGROUND: Wide-necked intracranial aneurysms have been a challenge for endovascular techniques. With the advent of adjunctive devices such as balloons or stents, recanalisation rates have decreased secondary to better packing. PURPOSE: The purpose of this registry was to evaluate the safety and effectiveness of the new Low-profiled Visualized Intraluminal Support LVIS and LVIS Jr. stents in the treatment of unruptured wide-neck intracranial aneurysms. METHODS: The LVIS or LVIS Jr. stent-assisted coil embolisation was performed in 78 patients harbouring 78 intracranial aneurysms. There were 59 aneurysms located in the anterior circulation and 19 in the posterior circulation. Clinical data and 6-month follow-up angiograms are presented. RESULTS: The LVIS and LVIS Jr. stents were successfully delivered to the target aneurysm; however, there were seven cases in which the LVIS/LVIS Jr. stents had suboptimal opening and apposition to the parent vessel wall. The overall technical success for all groups was 91% (71 of 78 stents). There was complete angiographic occlusion in 66 (85%) of 78 cases and residual neck remnants in 12 (15%) cases. All patients had 6-month angiographic follow-up, which demonstrated complete occlusion of the target aneurysm in 64 (82%) cases, residual neck remnants in 5 (6%) cases and there was aneurysm filling in 9 (12%) cases. CONCLUSIONS: The LVIS/LVIS Jr. stent system is safe and effective for the treatment of wide-neck intracranial aneurysms, providing suitable support of the coil mass, which allows for a high level of occlusion with low rates of recanalisation and subsequent treatments.