The United Kingdom's largest experience with Contour in the treatment of wide-neck intracranial aneurysms with long-term (2-year) follow-up.

Islim, FI.; Suvarna, R.; Saleem, N.; Patankar, T.

The United Kingdom's largest experience with Contour in the treatment of wide-neck intracranial aneurysms with long-term (2-year) follow-up.

All Authors

Islim, FI.

Suvarna, R.

Saleem, N.

Patankar, T.

LTHT Author

Islim, Fathallah
Saleem, Nayyar
Patankar, Tufail

LTHT Department

Radiology
Interventional Neuroradiology

Publication Date

2025

Item Type

Journal Article

Abstract

Background and purposeEndovascular treatment of wide-neck bifurcation aneurysms has historically proved difficult with variable outcomes of efficacy and safety. We assessed the short- and long-term clinical and radiologic outcomes in the real-world use of Contour neurovascular system. Materials and methods This study was a retrospective analysis of unruptured intracranial aneurysms treated with the Contour. The primary radiologic outcomes were quantified on DSA, CTA, or MRA using the modified Raymond-Roy criteria. The outcomes were defined as complete occlusion (RROC 1) and adequate occlusion (RROC 1 and RROC 2) at 6 months and 2-years. The primary safety outcome was the rate of device-related adverse events. Secondary safety outcomes included time to discharge and change in the modified Rankin scale (mRS) score at 6-month follow-up. Results 54 patients were treated with Contour from February 2017 to July 2022. 50 aneurysms underwent 6-month follow-up. 28 of 50 aneurysms treated (56%) remained completely occluded at 6-month follow-up (RROC 1), whilst 44 of 50 aneurysms treated (88%) were adequately occluded. 46 aneurysms underwent 2-year follow-up. 28 of 46 aneurysms treated (60.9%) remained completely occluded at 2-year follow-up (RROC 1), whilst 38 of 46 aneurysms (82.6%) were adequately occluded (RROC 1 and RROC2). Immediate postoperative complications occurred in 5 patients; only 1 patient (1.8%) had residual neurologic deficits at 6 months (mRS 1). Conclusions Management of wide-neck aneurysms remains difficult, with high rates of recurrence and complications. The use of the Contour demonstrated a promising and safe addition to the intravascular stock for the treatment of complex wide-neck aneurysms.