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Lv YC, Dong Q, Yao YH, Lei JJ. Cold sub-mucosal injection versus traditional cold snare polypectomy for diminutive and small colorectal polyps: A systematic review and meta-analysis. Indian J Gastroenterol 2024:10.1007/s12664-024-01600-7. [PMID: 38955995 DOI: 10.1007/s12664-024-01600-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 04/23/2024] [Indexed: 07/04/2024]
Abstract
BACKGROUND The guidelines recommend conventional cold snare polypectomy (C-CSP) for diminutive and small colorectal polyps (≤ 10 mm). However, it remains unclear whether CSP with sub-mucosal injection (SI-CSP) achieves comparable efficacy to C-CSP for managing these lesions. This study compares SI-CSP with C-CSP for patients with diminutive and small colorectal polyps. METHODS An electronic literature search was conducted to retrieve articles comparing resection outcomes between SI-CSP and C-CSP in diminutive and small colorectal polyps (registration number INPLASY2023100096). Our primary outcomes of interest were the complete resection rate (CRR), complications (namely immediate bleeding, delayed bleeding and perforation) and polypectomy time. Mean differences with 95% confidence intervals (CI) were employed for continuous variables, while odds ratios (OR) with 95% CI were calculated for categorical variables. Data was analyzed using a random effects model and the I2 test was utilized to assess heterogeneity. RESULTS Eight studies involving 1470 patients with 2223 polyps were included in our analysis. The CRR was not significantly higher in the SI-CSP group, with an OR of 95% CI 0.50 (0.22, 1.15). The incidences of immediate bleeding (OR 95% CI 0.60 [0.26-1.40]) and delayed bleeding (OR 95% CI 0.88 [0.32-2.42]) did not differ significantly between the two groups. On average, the mean polypectomy time was 64.75 seconds shorter in the C-CSP group (95% CI, - 102.96 to - 26.53). Notably, no perforation events were reported in the included studies. CONCLUSIONS The use of SI-CSP was not superior to C-CSP in managing diminutive and small colorectal polyps and the procedure required significantly more time.
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Affiliation(s)
- Yong-Cai Lv
- Department of Gastroenterology, Huzhou Central Hospital, The Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, No.1558, Sanhuan North Road, Wuxing District, Huzhou, 313000, Zhejiang Province, China
- Department of Gastroenterology, Zhenning Buyi and Miao Autonomous County People's Hospital, Zhenning, 561200, Guizhou Province, China
| | - Quan Dong
- Department of Gastroenterology, Huzhou Central Hospital, The Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, No.1558, Sanhuan North Road, Wuxing District, Huzhou, 313000, Zhejiang Province, China.
| | - Yan-Hua Yao
- Department of Gastroenterology, Zhenning Buyi and Miao Autonomous County People's Hospital, Zhenning, 561200, Guizhou Province, China
| | - Jing-Jing Lei
- Department of Gastroenterology, The Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang, 550014, Guizhou Province, China
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Abdallah M, Ahmed K, Abbas D, Mohamed MFH, Suryawanshi G, McDonald N, Wilson N, Umar S, Shaukat A, Bilal M. Cold snare endoscopic mucosal resection for colon polyps: a systematic review and meta-analysis. Endoscopy 2023; 55:1083-1094. [PMID: 37451284 DOI: 10.1055/a-2129-5752] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
BACKGROUND Cold snare endoscopic mucosal resection (CS-EMR) can reduce the risks associated with electrocautery during colon polyp resection. Data on efficacy are variable. This systematic review and meta-analysis aimed to estimate the pooled efficacy and safety rates of CS-EMR. METHODS We conducted a comprehensive literature search of multiple databases, from inception to March 2023, for studies addressing outcomes of CS-EMR for colon polyps. The weighted pooled estimates with 95 %CIs were calculated using the random effects model. I2 statistics were used to evaluate heterogeneity. RESULTS 4137 articles were reviewed, and 16 studies, including 2592 polyps in 1922 patients (51.4 % female), were included. Overall, 54.4 % of polyps were adenomas, 45 % were sessile serrated lesions (SSLs), and 0.6 % were invasive carcinomas. Polyp recurrence after CS-EMR was 6.7 % (95 %CI 2.4 %-17.4 %, I2 = 94 %). The recurrence rate was 12.3 % (95 %CI 3.4 %-35.7 %, I2 = 94 %) for polyps ≥ 20 mm, 17.1 % (95 %CI 4.6 %-46.7 %, I2 = 93 %) for adenomas, and 5.7 % (95 %CI 3.2 %-9.9 %, I2 = 50 %) for SSLs. The pooled intraprocedural bleeding rate was 2.6 % (95 %CI 1.5 %-4.5 %, I2 = 51 %), the delayed bleeding rate was 1.5 % (95 %CI 0.8 %-2.7 %, I2 = 18 %), and no perforations or post-polypectomy syndromes were reported, with estimated rates of 0.6 % (95 %CI 0.3 %-1.3 %, I2 = 0 %) and 0.6 % (95 %CI 0.3 %-1.4 %, I2 = 0 %), respectively. CONCLUSION CS-EMR demonstrated an excellent safety profile for colon polyps, with variable recurrence rates based on polyp size and histology. Large prospective studies are needed to validate these findings.
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Affiliation(s)
- Mohamed Abdallah
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota, United States
| | - Khalid Ahmed
- Department of Internal Medicine, The Wright Center for Graduate Medical Education, Scranton, Pennsylvania, United States
| | - Daniyal Abbas
- Department of Internal Medicine, East Carolina University, Greenville, North Carolina, United States
| | - Mouhand F H Mohamed
- Brown University, Warren Alpert Medical School, Providence, Rhode Island, United States
| | - Gaurav Suryawanshi
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota, United States
| | - Nicholas McDonald
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota, United States
| | - Natalie Wilson
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota, United States
| | - Shifa Umar
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, United States
| | - Aasma Shaukat
- Division of Gastroenterology, Department of Medicine and Population Health, NYU Grossman School of Medicine, New York, New York, United States
| | - Mohammad Bilal
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota, United States
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Liang Z, Wei Y, Zhang S, Li P. 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. J Gastroenterol Hepatol 2023; 38:1892-1899. [PMID: 37608577 DOI: 10.1111/jgh.16308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/25/2023] [Accepted: 07/10/2023] [Indexed: 08/24/2023]
Abstract
BACKGROUND AND AIM Neoplastic polyp removal is important for colorectal cancer prevention. Endoscopists have proposed cold snare endoscopic mucosal resection (CS-EMR) as a solution to solve positive cutting edges and postoperative bleeding. However, many controversies regarding its specific performance in practice have been reported. The aim of this pooled analysis was to report the efficacy and safety of CS-EMR. METHODS PubMed/Medline, Embase, Google Scholar, and the Cochrane Library searched up to January 2022 to identify studies in which CS-EMR was performed for the removal of colorectal polyps measuring less than 20 mm. The primary outcome was the complete resection rate (CRR), and the secondary outcome was the rate of adverse events. RESULTS Eleven studies were included in the final analysis, which included 861 colorectal polyps. The overall CRR with CS-EMR was 96.3% (95% CI, 93.9-98.2%). The early and delayed bleeding rates of CS-EMR were 3.1% (95% CI, 1.2-5.5%) and 1.4% (95% CI, 0.6-2.4%), respectively. There were no statistical significances between CS-EMR and cold snare polypectomy (CSP) in terms of the CRR and adverse events, as well as CS-EMR and hot snare endoscopic mucosal resection (HS-EMR). CONCLUSIONS For resecting colorectal polyps measuring ≤20 mm, CS-EMR is an effective attempt. However, compared with CSP and HS-EMR, CS-EMR did not improve the efficiency and safety of polypectomy as expected. Multicenter randomized controlled trials are needed to compare CSP with CS-EMR in the resection of <10 mm polyps and HSP with CS-EMR in the resection of ≥10 mm polyps.
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Affiliation(s)
- Zheng Liang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing, China
| | - Yongqiu Wei
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing, China
| | - Shutian Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing, China
| | - Peng Li
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing, China
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Mou Y, Ye L, Qin X, Feng R, Zhang L, Hu Q, Cao T, Zhou X, Wen W, Zhang C, Chen Z, Liu Y, Yang Z, Huo T, Pan F, Li X, Hu B. Impact of Submucosal Saline Injection During Cold Snare Polypectomy for Colorectal Polyps Sized 3-9 mm: A Multicenter Randomized Controlled Trial. Am J Gastroenterol 2023; 118:1848-1854. [PMID: 37207320 DOI: 10.14309/ajg.0000000000002329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/23/2023] [Indexed: 05/21/2023]
Abstract
INTRODUCTION The role of submucosal injection during cold snare polypectomy (CSP) remains uncertain. In this study, we investigated the impact of submucosal saline injection during CSP for colorectal polyps sized 3-9 mm. METHODS This was a multicenter randomized controlled trial conducted in 6 Chinese centers between July and September 2020 (ChiCTR2000034423). Patients with nonpedunculated colorectal polyps sized 3-9 mm were randomized in a 1:1 ratio to either CSP with submucosal injection (SI-CSP) or conventional CSP (C-CSP). The primary outcome was the incomplete resection rate (IRR). Secondary outcomes included procedure time, intraprocedural bleeding, delayed bleeding, and perforation. RESULTS One hundred fifty patients with 234 polyps in the SI-CSP group and 150 patients with 216 polyps in the C-CSP group were included in the analysis. The IRR was not decreased in the SI-CSP group compared with that in the C-CSP group (1.7% vs 1.4%, P = 1.000). The median procedure time in the SI-CSP group was significantly longer than that in the C-CSP group (108 seconds vs 48 seconds, P < 0.001). The incidences of intraprocedural bleeding and delayed bleeding were not significantly different between the 2 groups ( P = 0.531 and P = 0.250, respectively). There was no perforation in either group. DISCUSSION Submucosal saline injection during CSP for colorectal polyps sized 3-9 mm did not decrease the IRR or reduce adverse events but prolonged the procedure time.
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Affiliation(s)
- Yi Mou
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Liansong Ye
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaobo Qin
- Department of Gastroenterology, The First Veterans Hospital of Sichuan Province, Chengdu, China
| | - Rui Feng
- Department of Gastroenterology, The First Veterans Hospital of Sichuan Province, Chengdu, China
| | - Lifan Zhang
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Qin Hu
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Tingting Cao
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xinyue Zhou
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
| | - Wu Wen
- Department of Gastroenterology, Chengdu Second People's Hospital, Chengdu, China
| | - Chuanming Zhang
- Department of Gastroenterology, Chengdu Second People's Hospital, Chengdu, China
| | - Zonghua Chen
- Department of Gastroenterology, Yibin Second People's Hospital, Yibin, China
| | - Yi Liu
- Department of Gastroenterology, Yibin Second People's Hospital, Yibin, China
| | - Zhimin Yang
- Department of Gastroenterology, SheHong People's Hospital, Shehong, China
| | - Tao Huo
- Department of Gastroenterology, SheHong People's Hospital, Shehong, China
| | - Fang Pan
- Department of Gastroenterology, The Affiliated Huai'an No. 1 People's Hospital, Nanjing Medical University, Huaian, China
| | - Xuelian Li
- Department of Gastroenterology, The Affiliated Huai'an No. 1 People's Hospital, Nanjing Medical University, Huaian, China
| | - Bing Hu
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, China
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Capogreco A, Alfarone L, Massimi D, Repici A. Cold resection for colorectal polyps: where we are and where we are going? Expert Rev Gastroenterol Hepatol 2023; 17:719-730. [PMID: 37318101 DOI: 10.1080/17474124.2023.2223976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/07/2023] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Endoscopic resection of colonic precancerous lesions has been demonstrated to significantly decrease colorectal cancer (CRC) incidence and mortality. Among resection techniques, cold snare polypectomy (CSP) has been shown as a highly feasible, effective and safe option and is widely used in clinical practice, being regarded as the first-line technique for removal of small and diminutive colorectal polyps. On the other hand, conventional hot snare polypectomy (HSP) and endoscopic mucosal resection (EMR), namely the gold standard treatments for larger polyps, may be occasionally associated to complications due to electrocautery injury. AREAS COVERED To overcome these shortcomings of electrocautery-based resection techniques, in the last few years CSP has been increasingly assessed as a treatment option for additional indications, with a focus on nonpedunculated colorectal polyps ≥10 mm. EXPERT OPINION This review aims to present current and widened indications of CSP discussing the latest findings from the most remarkable studies, with an insight into technical issues, novelties and potential advances in the near future.
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Affiliation(s)
- Antonio Capogreco
- Department of Gastroenterology, Endoscopy Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Ludovico Alfarone
- Department of Gastroenterology, Endoscopy Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of biomedical scienses, Humanitas University, Milan, Italy
| | - Davide Massimi
- Department of Gastroenterology, Endoscopy Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Alessandro Repici
- Department of biomedical scienses, Humanitas University, Milan, Italy
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Ishibashi F, Suzuki S, Nagai M, Mochida K, Morishita T. Colorectal cold snare polypectomy: Current standard technique and future perspectives. Dig Endosc 2023; 35:278-286. [PMID: 35962754 DOI: 10.1111/den.14420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/12/2022] [Indexed: 02/08/2023]
Abstract
It has been shown that resection of adenomatous colorectal polyps can reduce mortality due to colorectal cancer. In daily clinical practice, simpler and safer methods of colorectal polypectomy have been sought to enable endoscopists to resect all detected lesions. Among these, cold snare polypectomy (CSP) is widely used in clinical practice because of its advantages in shortening procedure time, reducing delayed bleeding risk, and lowering treatment costs, while maintaining a similar complete resection rate for lesions smaller than 10 mm when compared to conventional hot snare polypectomy. This review introduces the findings of previous studies that investigated the efficacy and safety of the CSP procedure for nonpedunculated polyps smaller than 10 mm, and describes technical points to remember when practicing CSP based on the latest evidence, including using a thin wire snare specifically designed for CSP, and observing the surrounding mucosa of the resection site with chromoendoscopy or image-enhanced endoscopy to ensure that there is no residual lesion. This review also describes the potential of expanding the indication of CSP as a treatment for lesions larger than 10 mm, those with pedunculated morphology, those located near the appendiceal orifice, and for patients under continuous antithrombotic agent therapy. Finally, the perspective on optimal treatments for recurrent lesions after CSP is also discussed, despite the limited related evidence and data.
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Affiliation(s)
- Fumiaki Ishibashi
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, Chiba, Japan
| | - Sho Suzuki
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, Chiba, Japan
| | - Mizuki Nagai
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, Chiba, Japan
| | - Kentaro Mochida
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, Chiba, Japan
| | - Tetsuo Morishita
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, Chiba, Japan
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