EP14 CONTOUR® plus coiling with jailed microcatheter for better occlusion (CoCoJaMBO) in wide-necked intracranial aneurysms: proof of principle and angiographic results

Purpose Wide-necked bifurcation aneurysms, partially thrombosed, and giant aneurysms are challenging to treat. We report our preliminary experience with a Contour®-assisted coiling technique and discuss the periprocedural safety, feasibility, and effectiveness of the approach. Methods We retrospectively reviewed consecutive patients who received endovascular treatment for intracranial aneurysms with an intra-aneurysmal flow disruptor (Contour) between October 2018 and December 2020 and identified patients treated with a combination of Contour and platinum coils. Clinical and procedural data were recorded. Results For this analysis, 5 patients treated with CoCoJaMBO were identified (2 female). The mean age was 62.4 ± 7.4 years. Four of 5 aneurysms were associated with previous acute subarachnoid hemorrhage (SAH). The mean dome height was 12 ± 8.5 mm, the mean dome width 10.2 ± 6.3 mm and the mean dome to neck ratio 2.5 ± 1.2. Adequate occlusion at the end of procedure was achieved in 4 of 5 cases. In one SAH patient, a parent vessel was temporarily occluded but could be reopened rapidly. One device detached prematurely without any sequelae. No other procedural adverse events were recorded. Six month follow up data will be available for presentation but were not available at the time of completion of this abstract Conclusion From this initial experience, Contour with adjunctive coiling is a safe and technically feasible method for endovascular treatment of large, wide-necked, partially thrombosed, or ruptured bifurcation aneurysms. Further studies with larger numbers of patients and longer follow-up are needed to confirm our results. Disclosure FW and OJ are consulting for Cerus Endovascular. JH and SP have no Conflicts of interest.