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DOI: 10.1055/a-2733-0944
Safety and efficacy of scissor-type knives in colorectal endoscopic submucosal dissection: International multicenter observational study
Authors
Clinical Trial:
Registration number (trial ID): UMIN000031511, Trial registry: UMIN Japan (http://www.umin.ac.jp/english/), Type of Study: Prospective Multi-Center Study
Abstract
Background and study aims
Scissor-type knives have shown safety and efficacy in endoscopic submucosal dissection (ESD) procedures, particularly in studies from Japan. However, the safety and efficacy of these devices in international settings, particularly outside Japan, is not well established.
Patients and methods
This was a prospective, multicenter, observational study conducted across nine international centers, encompassing a total of 461 lesions from 460 patients. In subgroup analysis, 162 lesions came from four institutions in Japan (Japanese institutions group, JAG) and 299 lesions from five institutions outside Japan (non-Japanese institutions group [NJAG]). After 1:1 propensity score matching resulted in 120 matched pairs of lesions, key outcomes were compared between groups.
Results
The overall perforation rate during ESD procedures was 0.87%. Intraoperative perforations were observed more frequently in NJAG than JAG (3 vs. 1 event, 1.9% vs. 0.33%, respectively), although not statistically significant (P = 0.127). Overall incidence of delayed bleeding was also 0.87%, with no delayed bleeding reported in NJAG. Post propensity matching analysis revealed a significantly slower median resection speed in NJAG compared with JAG (9.12 0.86–56.57 vs 26.21 1.95–93.54 mm²/min, P < 0.001). Both histological complete resection and curative resection rates were significantly lower in NJAG than in JAG with rates of 88.3% vs 98.3% for histological complete resection and 83.3% vs 95% for curative resection (both P < 0.01).
Conclusions
Use of scissor-type knives in colorectal ESD outside Japan demonstrated a favorable safety profile. However, certain performance outcomes, such as resection speed and resection success rates, were inferior to Japanese institutions.
Keywords
Endoscopy Lower GI Tract - Colorectal cancer - Polyps / adenomas / ... - Endoscopic resection (polypectomy, ESD, EMRc, ...)Publication History
Received: 09 December 2024
Accepted after revision: 24 October 2025
Accepted Manuscript online:
27 October 2025
Article published online:
11 November 2025
© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).
Georg Thieme Verlag KG
Oswald-Hesse-Straße 50, 70469 Stuttgart, Germany
Kuilang Liu, Jing Wu, Yuzuru Tamaru, Yadan Wang, Hui Su, Chunmei Guo, Canghai Wang, Hong Liu, Makoto Kobayashi, Kiyoaki Honma, Takuya Yamada, Levchenko Evgeniy, Noor Mohammed, Sergio Cadoni, Adolfo Parra-Blanco, Antipova Mariya, Sauid Ishaq, Toshio Kuwai. Safety and efficacy of scissor-type knives in colorectal endoscopic submucosal dissection: International multicenter observational study. Endosc Int Open 2025; 13: a27330944.
DOI: 10.1055/a-2733-0944
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