• Eung Koo Yeon, Young Dae Cho, Dong Hyun Yoo, Jeong Eun Kim, Kang Min Kim, Sung Ho Lee, Won-Sang Cho, and Hyun-Seung Kang.
• Department of Radiology, National Medical Center, Seoul, Korea.
• Neurosurgery. 2021 Oct 13; 89 (5): 862-866.

BackgroundThe interplay of various commercially available stents during coil embolization of intracranial aneurysms and their ultimate impact are subject to debate.ObjectiveTo compare midterm outcomes of Low-Profile Visualization Endoluminal Support (LVIS) (MicroVention Inc) and Atlas (Stryker) stent-assisted coiling procedures.MethodsA total of 459 intracranial aneurysms subjected to coil embolization using LVIS (n = 318) or Atlas stents (n = 141) between April 2015 and December 2019 were eligible for study. To assess occlusive status postembolization, magnetic resonance angiography and/or conventional angiography were used. The Raymond classification was applied to categorize recanalization. Our analysis was propensity score matched according to probability of stent type deployed.ResultsEventually, 41 aneurysms (8.9%) displayed recanalization (minor, 28; major, 13) 6 mo after coiling. Patient age (P = .018), sex (P = .015), aneurysmal location (P < .001), and type of aneurysm (P < .001) differed significantly by group. Overall and major recanalization rates at midterm were similar in both groups (9.1% and 8.5% vs 3.1% and 2.1%, respectively), and there was no significant difference even after 1:1 propensity score matching (odds ratio [OR] = 0.75 [P = .514] and OR = 0.75 [P = .706], respectively).ConclusionIn stent-assisted coil embolization of intracranial aneurysms, midterm outcomes of LVIS and Atlas device groups were similar, despite theoretic LVIS superiority. Further randomized comparative studies are needed to confirm our findings.© Congress of Neurological Surgeons 2021.

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