Clinical Endoscopy

Systematic Review and Meta-analysis

Cold snare polypectomy versus cold endoscopic mucosal resection for small colorectal polyps: a meta-analysis of randomized controlled trials: Vishali Moond, Priyadarshini Loganathan, Sheza Malik, Dushyant Singh Dahiya, Babu P. Mohan, Daryl Ramai, Michele McGinnis, Deepak Madhu, Mohammad Bilal, Aasma Shaukat, Saurabh Chandan; Received April 3, 2024 Accepted April 28, 2024 Published online August 23, 2024; DOI: https://doi.org/10.5946/ce.2024.081 [Epub ahead of print]

Graphical Abstract Abstract PDF Supplementary Material PubReader ePub: Background
/Aims: Cold snare polypectomy (CSP) is routinely performed for small colorectal polyps (≤10 mm). However, challenges include insufficient resection depth and immediate bleeding, hindering precise pathological evaluation. We aimed to compare the outcomes of cold endoscopic mucosal resection (CEMR) with that of CSP for colorectal polyps ≤10 mm, using data from randomized controlled trials (RCTs).
Methods
Multiple databases were searched in December 2023 for RCTs reporting outcomes of CSP versus CEMR for colorectal polyps ≤10 mm in size. Our primary outcomes were rates of complete and en-bloc resections, while our secondary outcomes were total resection time (seconds) and adverse events, including immediate bleeding, delayed bleeding, and perforation.
Results
The complete resection rates did not significantly differ (CSP, 91.8% vs. CEMR 94.6%), nor did the rates of en-bloc resection (CSP, 98.9% vs. CEMR, 98.3%) or incomplete resection (CSP, 6.7% vs. CEMR, 4.8%). Adverse event rates were similarly insignificant in variance. However, CEMR had a notably longer mean resection time (133.51 vs. 91.30 seconds).
Conclusions
Our meta-analysis of seven RCTs showed that while both CSP and CEMR are equally safe and effective for resecting small (≤10 mm) colorectal polyps, the latter is associated with a longer resection time.

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Systematic Review and Meta-Analysis

Outcomes of thin versus thick-wire snares for cold snare polypectomy: a systematic review and meta-analysis: Suprabhat Giri, Vaneet Jearth, Harish Darak, Sridhar Sundaram; Clin Endosc 2022;55(6):742-750. Published online November 9, 2022; DOI: https://doi.org/10.5946/ce.2022.141

Abstract PDF Supplementary Material PubReader ePub

Background
/Aims: Cold snare polypectomy (CSP) is commonly used for the resection of colorectal polyps ≤10 mm. Data regarding the influence of snare type on CSP effectiveness are conflicting. Hence, this meta-analysis aimed to compare the outcomes and safety of thin- and thick-wire snares for CSP.
Methods
A comprehensive search of the literature published between 2000 and 2021 was performed of various databases for comparative studies evaluating the outcomes of thin- versus thick-wire snares for CSP.
Results
Five studies with data on 1,425 polyps were included in the analysis. The thick-wire snare was comparable to the thin-wire snare with respect to complete histological resection (risk ratio [RR], 1.03; 95% confidence interval [CI], 0.97–1.09), overall bleeding (RR, 0.98; 95% CI, 0.40–2.40), polyp retrieval (RR, 1.01; 95% CI, 0.97–1.04), and involvement of submucosa in the resection specimen (RR, 1.28; 95% CI, 0.72–2.28). There was no publication bias and a small study effect, and the relative effects remained the same in the sensitivity analysis.
Conclusions
CSP using a thin-wire snare has no additional benefit over thick-wire snares in small colorectal polyps. Factors other than snare design may play a role in improving CSP outcomes.

Citations

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Factors determining the resection ability of snares in cold snare polypectomy: Construction of an ex vivo model for accurately evaluating resection ability
Ryohei Hirose, Takuma Yoshida, Naohisa Yoshida, Katsuma Yamauchi, Hajime Miyazaki, Naoto Watanabe, Risa Bandou, Ken Inoue, Hiroshi Ikegaya, Takaaki Nakaya, Yoshito Itoh
Digestive Endoscopy.2024; 36(5): 573. CrossRef
Effectiveness and safety of thin vs. thick cold snare polypectomy of small colorectal polyps: Systematic review and meta-analysis
Rishad Khan, Sunil Samnani, Marcus Vaska, Samir C Grover, Catharine M Walsh, Jeffrey Mosko, Michael J Bourke, Steven J Heitman, Nauzer Forbes
Endoscopy International Open.2024; 12(01): E99. CrossRef
International Digestive Endoscopy Network consensus on the management of antithrombotic agents in patients undergoing gastrointestinal endoscopy
Seung Joo Kang, Chung Hyun Tae, Chang Seok Bang, Cheol Min Shin, Young-Hoon Jeong, Miyoung Choi, Joo Ha Hwang, Yutaka Saito, Philip Wai Yan Chiu, Rungsun Rerknimitr, Christopher Khor, Vu Van Khien, Kee Don Choi, Ki-Nam Shim, Geun Am Song, Oh Young Lee
Clinical Endoscopy.2024; 57(2): 141. CrossRef
IDEN Consensus on Management of Antithrombotic Agents in Patients Undergoing Gastrointestinal Endoscopy
Seung Joo Kang, Chung Hyun Tae, Chang Seok Bang, Cheol Min Shin, Young-Hoon Jeong, Miyoung Choi, Joo Ha Hwang, Yutaka Saito, Philip Wai Yan Chiu, Rungsun Rerknimitr, Christopher Khor, Vu Van Khien, Kee Don Choi, Ki-Nam Shim, Geun Am Song, Oh Young Lee
The Korean Journal of Gastroenterology.2024; 83(6): 217. CrossRef
High‐Performance Dedicated Snares with Tip Attachments can Overcome Current Disadvantages in Cold Snare Polypectomy
Ryohei Hirose, Naohisa Yoshida, Takuma Yoshida, Hiroki Mukai, Katsuma Yamauchi, Hajime Miyazaki, Naoto Watanabe, Risa Bandou, Ken Inoue, Osamu Dohi, Yoshikazu Inagaki, Yutaka Inada, Takaaki Murakami, Akio Yanagisawa, Hiroshi Ikegaya, Takaaki Nakaya, Yoshi
Advanced Materials Technologies.2024;[Epub] CrossRef
Does the wire diameter really determine the outcomes in cold snare polypectomy?
S Giri, S Sundaram
Journal of Gastroenterology and Hepatology.2023; 38(4): 665. CrossRef
Cold resection for colorectal polyps: where we are and where we are going?
Antonio Capogreco, Ludovico Alfarone, Davide Massimi, Alessandro Repici
Expert Review of Gastroenterology & Hepatology.2023; 17(7): 719. CrossRef
Endoscopic treatment of colorectal polyps and early colorectal cancer
Yunho Jung
Journal of the Korean Medical Association.2023; 66(11): 642. CrossRef

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Review

Current Treatment Strategy for Superficial Nonampullary Duodenal Epithelial Tumors: Tetsuya Suwa, Kohei Takizawa, Noboru Kawata, Masao Yoshida, Yohei Yabuuchi, Yoichi Yamamoto, Hiroyuki Ono; Clin Endosc 2022;55(1):15-21. Published online September 29, 2021; DOI: https://doi.org/10.5946/ce.2021.141

Abstract PDF PubReader ePub

Endoscopic submucosal dissection (ESD) is the standard treatment method for esophageal, gastric, and colorectal cancers. However, it has not been standardized for duodenal lesions because of its high complication rates. Recently, minimally invasive and simple methods such as cold snare polypectomy and underwater endoscopic mucosal resection have been utilized more for superficial nonampullary duodenal epithelial tumors (SNADETs). Although the rate of complications associated with duodenal ESD has been gradually decreasing because of technical advancements, performing ESD for all SNADETs is unnecessary. As such, the appropriate treatment plan for SNADETs should be chosen according to the lesion type, patient condition, and endoscopist’s skill.

Citations

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International Digestive Endoscopy Network consensus on the management of antithrombotic agents in patients undergoing gastrointestinal endoscopy
Seung Joo Kang, Chung Hyun Tae, Chang Seok Bang, Cheol Min Shin, Young-Hoon Jeong, Miyoung Choi, Joo Ha Hwang, Yutaka Saito, Philip Wai Yan Chiu, Rungsun Rerknimitr, Christopher Khor, Vu Van Khien, Kee Don Choi, Ki-Nam Shim, Geun Am Song, Oh Young Lee
Clinical Endoscopy.2024; 57(2): 141. CrossRef
IDEN Consensus on Management of Antithrombotic Agents in Patients Undergoing Gastrointestinal Endoscopy
Seung Joo Kang, Chung Hyun Tae, Chang Seok Bang, Cheol Min Shin, Young-Hoon Jeong, Miyoung Choi, Joo Ha Hwang, Yutaka Saito, Philip Wai Yan Chiu, Rungsun Rerknimitr, Christopher Khor, Vu Van Khien, Kee Don Choi, Ki-Nam Shim, Geun Am Song, Oh Young Lee
The Korean Journal of Gastroenterology.2024; 83(6): 217. CrossRef
Underwater Endoscopic Mucosal Resection Versus Conventional Endoscopic Mucosal Resection for Superficial Non-ampullary Duodenal Epithelial Tumors ≤20 mm
Zhikun Yin, Ji Li, Weilin Yang, Weifeng Huang, Dong Xu, Xiaoyi Lei, Jinyan Zhang
Journal of Clinical Gastroenterology.2023; 57(9): 928. CrossRef
Long-term outcomes of endoscopic resection for duodenal neuroendocrine tumors
Kiyoun Yi, Gwang Ha Kim, Su Jin Kim, Cheol Woong Choi, Moon Won Lee, Bong Eun Lee, Geun Am Song
Scientific Reports.2023;[Epub] CrossRef
Endoscopic management of NADTs
Enrique Pérez-Cuadrado-Robles, Pierre H. Deprez
Endoscopy International Open.2022; 10(06): E733. CrossRef
Duodenaladenome und -karzinome: chirurgische Therapiekonzepte
Michael Ghadimi, Jochen Gaedcke
Allgemein- und Viszeralchirurgie up2date.2022; 16(03): 257. CrossRef
Issues and Prospects of Current Endoscopic Treatment Strategy for Superficial Non-Ampullary Duodenal Epithelial Tumors
Tetsuya Suwa, Masao Yoshida, Hiroyuki Ono
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Original Articles

Is Submucosal Injection Helpful in Cold Snare Polypectomy for Small Colorectal Polyps?: Ji Hyun Song, Shai Friedland; Clin Endosc 2021;54(3):397-403. Published online February 9, 2021; DOI: https://doi.org/10.5946/ce.2020.226

Abstract PDF PubReader ePub

Background
/Aims: Cold snare polypectomy (CSP) is an effective method of polyp removal for small colorectal polyps. However, the effect of submucosal injection in cold snare endoscopic mucosal resection (CS-EMR) for small polyps is unclear. Therefore, this study aimed to evaluate the effect of submucosal injection in CS-EMR for small polyps.
Methods
Between 2018 and 2019, 100 consecutive small colorectal polyps (5–10 mm) were identified in 58 patients. The first 50 consecutive polyps were removed by CS-EMR, and the remaining 50 were removed by CSP. Demographic data, clinical data, endoscopic findings, procedure times, complication rates, and pathology data were collected.
Results
No difference in the complete resection rate was observed between the CS-EMR and CSP groups. A total of 9 polyps showed post-polypectomy bleeding (7 had immediate bleeding, 1 had delayed bleeding, and 1 had both immediate and delayed bleeding). No difference in the bleeding rate was observed between the two groups. In multivariate analysis, warfarin (odds ratio [OR], 42.334; 95% confidence interval [CI], 1.006–1,781.758) and direct-acting oral anticoagulants (OR, 35.244; 95% CI, 3.853–322.397) showed a significantly increased risk of bleeding.
Conclusions
The effect of submucosal injection in CSP was not significant for small colorectal polyps.

Citations

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Cold sub-mucosal injection versus traditional cold snare polypectomy for diminutive and small colorectal polyps: A systematic review and meta-analysis
Yong-Cai Lv, Quan Dong, Yan-Hua Yao, Jing-Jing Lei
Indian Journal of Gastroenterology.2024;[Epub] CrossRef
Colorectal cold snare polypectomy: Current standard technique and future perspectives
Fumiaki Ishibashi, Sho Suzuki, Mizuki Nagai, Kentaro Mochida, Tetsuo Morishita
Digestive Endoscopy.2023; 35(3): 278. CrossRef
The efficacy and safety of cold snare polypectomy with submucosal injection for the removal of polyps less than 20 mm in size: a systematic review and meta‐analysis
Zheng Liang, Yongqiu Wei, Shutian Zhang, Peng Li
Journal of Gastroenterology and Hepatology.2023; 38(11): 1892. CrossRef
Impact of Submucosal Saline Injection During Cold Snare Polypectomy for Colorectal Polyps Sized 3–9 mm: A Multicenter Randomized Controlled Trial
Yi Mou, Liansong Ye, Xiaobo Qin, Rui Feng, Lifan Zhang, Qin Hu, Tingting Cao, Xinyue Zhou, Wu Wen, Chuanming Zhang, Zonghua Chen, Yi Liu, Zhimin Yang, Tao Huo, Fang Pan, Xuelian Li, Bing Hu
American Journal of Gastroenterology.2023; 118(10): 1848. CrossRef
Cold resection for colorectal polyps: where we are and where we are going?
Antonio Capogreco, Ludovico Alfarone, Davide Massimi, Alessandro Repici
Expert Review of Gastroenterology & Hepatology.2023; 17(7): 719. CrossRef
Cold snare endoscopic mucosal resection for colon polyps: a systematic review and meta-analysis
Mohamed Abdallah, Khalid Ahmed, Daniyal Abbas, Mouhand F. H. Mohamed, Gaurav Suryawanshi, Nicholas McDonald, Natalie Wilson, Shifa Umar, Aasma Shaukat, Mohammad Bilal
Endoscopy.2023; 55(12): 1083. CrossRef
Endoscopic treatment of colorectal polyps and early colorectal cancer
Yunho Jung
Journal of the Korean Medical Association.2023; 66(11): 642. CrossRef

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Dedicated Cold Snare vs. Traditional Snare for Polypectomy of Diminutive and Small Lesions in a Porcine Model: A Research Group for Endoscopic Instruments and Stents (REIS) Study: Han Hee Lee, Bo-In Lee, Jung-Wook Kim, Hyun Lim, Si Hyung Lee, Jun-Hyung Cho, Yunho Jung, Kyoung Oh Kim, Chan Gyoo Kim, Kee Myung Lee, Jong-Jae Park, Myung-Gyu Choi, Hoon Jai Chun, Ho Gak Kim; Clin Endosc 2021;54(3):390-396. Published online September 10, 2020; DOI: https://doi.org/10.5946/ce.2020.096

Abstract PDF Supplementary Material PubReader ePub

Background
/Aims: The aim of this in vivo animal study was to evaluate the effectiveness and safety of dedicated cold snare (DCS) compared with those of traditional snare (TS) for cold snare polypectomy (CSP).
Methods
A total of 36 diminutive (5 mm) and 36 small (9 mm) pseudolesions were made by electrocoagulation in the colons of mini-pigs.
Results
For the diminutive lesions, there were no significant differences in technical success rate, procedure time, or complete resection rate between the DCS and TS groups; the rate of uneven resection margin in the DCS group was significantly lower than that of the TS group. For small lesions, technical success rate and complete resection rate were significantly higher in the DCS group than in the TS group (100% [18/18] vs. 55.6% [10/18], p=0.003; 94.4% [17/18] vs. 40% [4/10], p=0.006). In addition, the procedure duration was significantly shorter, and the rate of uneven resection margin was significantly lower in the DCS group (28.5 sec vs. 66.0 sec, p=0.006; 11.1% [2/18] vs. 100% [10/10], p<0.001). Two cases of perforation occurred in the DCS group. Multivariate analysis revealed that DCS use was independently associated with complete resection.
Conclusions
DCS is superior to TS in terms of technical success, complete resection, and reducing the duration of the procedure for CSP of small polyps.

Citations

Citations to this article as recorded by

Comparison of complete resection rates in cold snare polypectomy using two different wire diameter snares: A randomized controlled study
Toshiki Horii, Sho Suzuki, Akihiro Sugita, Misa Yamauchi, Hisatomo Ikehara, Chika Kusano, Takuji Gotoda
Journal of Gastroenterology and Hepatology.2023; 38(5): 752. CrossRef
Comparison of the clinical efficacy of cold snare polypectomy using a thin-wire snare and thick-wire snare for small colorectal polyps
Hong Jin Yoon, Yunho Jung, Young Sin Cho, Il-Kwun Chung
International Journal of Gastrointestinal Intervention.2023; 12(4): 183. CrossRef
Big Issues on Small Polyps: An Ideal Device, But Is It for an Ideal Indication?
Yoji Takeuchi
Clinical Endoscopy.2021; 54(3): 297. CrossRef
Cold versus hot polypectomy/endoscopic mucosal resection–A review of current evidence
Raquel Ortigão, Jochen Weigt, Ahmed Afifi, Diogo Libânio
United European Gastroenterology Journal.2021; 9(8): 938. CrossRef

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