• Naoki Kato, Kengo Nishimura, Shota Sonoda, Shota Kakizaki, Gota Nagayama, Ken Aoki, Fumiaki Maruyama, Ayako Ikemura, Issei Kan, Tomonobu Kodama, Shogo Kaku, Ichiro Yuki, Toshihiro Ishibashi, Katharina Otani, and Yuichi Murayama.
• Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Minato-ku, Tokyo, Japan. Electronic address: nao-kth@jikei.ac.jp.
• World Neurosurg. 2021 Feb 1; 146: e701-e707.

ObjectiveWe report the clinical outcomes of stent-assisted coiling for wide-necked intracranial aneurysms using 3 low-profile laser-cut stents and compare the results according to stent type.MethodsAll patients treated with stent-assisted coiling for their intracranial aneurysms at our hospital between July 2010 and September 2019 were reviewed. We selected patients with Enterprise, Neuroform EZ, or Neuroform Atlas stents who underwent imaging follow-up and investigated aneurysm and stent features, stent-related complications, recanalization, and retreatment rates. We compared the retreatment risk among the patients treated with the 3 stent types using Kaplan-Meier survival analysis and Cox regression analysis.ResultsWe evaluated 364 consecutive cases (103 Enterprise, 105 Neuroform EZ, and 156 Neuroform Atlas stents). Neuroform Atlas was more frequently used in distal vessels: 8 (7.8%) Enterprise, 2 (1.9%) Neuroform EZ, and 41 (26.3%) Neuroform Atlas cases, respectively. The median follow-up durations were 6.49, 4.91, and 1.24 years for the Enterprise, Neuroform EZ, and Neuroform Atlas cases, respectively, and retreatment was performed in 11 (10.1%), 9 (8.6%), and 6 (3.8%) cases. In the first 2 years of follow-up, the estimated retreatment risk ratios for Neuroform EZ and Neuroform Atlas with Enterprise as reference were 0.63 (95% confidence interval, 0.24-1.65; P = 0.35) and 0.54 (95% confidence interval, 0.18-1.59; P = 0.26), respectively.ConclusionsNeuroform Atlas stents were more frequently deployed in small-caliber vessels compared with the other 2 types of stents. The complication rate and retreatment risk until at least 1 year after the aneurysm treatment appeared to be similar for the 3 stent types.Copyright © 2020 Elsevier Inc. All rights reserved.

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