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Niu C, Bapaye J, Zhang J, Zhu K, Liu H, Farooq U, Zahid S, Elkhapery A, Okolo PI. Tip-in Versus Conventional Endoscopic Mucosal Resection for Colorectal Neoplasia: A Systematic Review and Meta-analysis. J Clin Gastroenterol 2023; 57:983-990. [PMID: 37389930 DOI: 10.1097/mcg.0000000000001880] [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] [Indexed: 07/01/2023]
Abstract
BACKGROUND Early-stage gastrointestinal neoplasms are frequently treated with conventional endoscopic mucosal resection (C-EMR). However, C-EMR frequently leads to incomplete resection of large colorectal lesions. Tip-in endoscopic mucosal resection (EMR), which was recently introduced for en bloc resection of colorectal neoplasms, minimizes slippage during the procedure. METHODS We conducted a systematic review and meta-analysis of published studies that compared Tip-in EMR with conventional EMR. We searched several electronic databases and included studies that reported on the primary outcomes of en bloc resection rate and complete resection rate, as well as secondary outcomes such as procedure time and procedure-related complications (including perforation and delayed bleeding rate). We used a random effects model to calculate odds ratios (ORs) with 95% CIs for dichotomous data and weighted mean differences with 95% CIs for continuous data. We also conducted several sensitivity analyses to assess the robustness of our findings. RESULTS A total of 11 studies involving 1244 lesions (684 in the Tip-in EMR group and 560 in C-EMR group) were included in the meta-analysis. Our meta-analysis showed that compared with conventional EMR, Tip-in EMR significantly increased the en bloc resection rate in patients with colorectal neoplasia (OR=3.61; 95% CI, 2.09-6.23; P <0.00001; I2 =0%) and had a higher complete resection rate (OR=2.49; 95% CI, 1.65-3.76; P <0.0001; I2 =0%). However, the procedure time and rates of procedure-related complications did not differ significantly between the 2 groups. CONCLUSIONS Tip-in EMR outperformed C-EMR for both the en bloc and complete resection of colorectal lesions with similar rates of procedural complications.
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Affiliation(s)
| | | | - Jing Zhang
- Harbin Medical University, Harbin, China
| | | | | | | | | | | | - Patrick I Okolo
- Division of Gastroenterology, Rochester General Hospital, Rochester, NY
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Knoop RF, Amanzada A, Petzold G, Ellenrieder V, Engelhardt M, Neesse A, Bremer SCB, Kunsch S. Endoscopic mucosal resection and endoscopic submucosal dissection with an external additional working channel (EMR+ and ESD+) are equivalent to using a double-channel endoscope: a systematic evaluation in a porcine ex vivo model. Surg Endosc 2023; 37:7749-7758. [PMID: 37567979 PMCID: PMC10520185 DOI: 10.1007/s00464-023-10295-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 07/02/2023] [Indexed: 08/13/2023]
Abstract
BACKGROUND AND AIMS With an external additional working channel (AWC) endoscopic mucosal resection (EMR) as well as endoscopic submucosal dissection (ESD) can be extended to techniques termed "EMR+" and "ESD+." These novel techniques are systematically compared to EMR and ESD under the use of a double-channel endoscope (DC). METHODS Our trial was conducted prospectively in a pre-clinical porcine animal model (EASIE-R simulator) with standardized gastric lesions measuring 3 or 4 cm. RESULTS EMR+ and EMR DC showed both good results for 3 cm lesions with no adverse events and an en bloc resection rate of 73.33% (EMR+) and 60.00% (EMR DC, p = 0.70). They came to their limits in 4 cm lesions with muscularis damages of 20.00% (EMR+), 13.33% (EMR DC, p ≥ 0.99) and decreasing en bloc resection rates of 60.00% (EMR+) and 46.67% (EMR DC, p = 0.72). ESD+ and ESD DC were both reliable concerning en bloc resection rates (100% in all groups) and adverse events (0.00% in 3 cm lesions, 12.50% muscularis damages in both ESD+ and ESD DC in 4 cm lesions). Resection time was slightly shorter in all groups with the AWC compared to DC although only reaching significance in 3 cm ESD lesions (p < 0.05*). CONCLUSIONS With the AWC, a standard endoscope can easily be transformed to double-channel functionality. We could show that EMR+ and ESD+ are non-inferior to EMR and ESD under the use of a double-channel endoscope. Consequently, the AWC presents an affordable alternative to a double-channel endoscope for both EMR and ESD.
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Affiliation(s)
- Richard F Knoop
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany.
| | - Ahmad Amanzada
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
| | - Golo Petzold
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
| | - Volker Ellenrieder
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
| | - Michael Engelhardt
- Department of Gastroenterology, Internal Medicine and Geriatrics, Rems-Murr-Hospital, Winnenden, Germany
| | - Albrecht Neesse
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
| | - Sebastian C B Bremer
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
| | - Steffen Kunsch
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
- Department of Gastroenterology, Internal Medicine and Geriatrics, Rems-Murr-Hospital, Winnenden, Germany
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Dolan RD, Ryou M. Endoscopic simulators: training the next generation. Curr Opin Gastroenterol 2021; 37:589-595. [PMID: 34482322 DOI: 10.1097/mog.0000000000000788] [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] [Indexed: 12/10/2022]
Abstract
PURPOSE OF REVIEW To provide a review of current evidence evaluating endoscopic simulators as teaching platforms in gastroenterology training, with emphasis on upper gastrointestinal anatomy. RECENT FINDINGS Endoscopic simulators have leveraged mechanical, virtual reality and ex-vivo or live animal platforms to deliver training in both general and therapeutic endoscopy. Simulators have demonstrated their greatest utility in training novice endoscopists. Intermediate and expert endoscopists may additionally benefit from simulator exposure when learning advanced therapeutic techniques including large tissue resection or natural orifice transluminal endoscopic surgery. SUMMARY Simulator-based learning offers promise to complement conventional endoscopic training modalities for novice trainees. Nevertheless, additional evidence demonstrating a clear benefit is required for simulators to become an integral part of gastroenterology training. As novel advanced endoscopic therapies are developed, endoscopic simulators may assume a larger role in training prior to clinical practice.
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Affiliation(s)
- Russell D Dolan
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Knoop RF, Wedi E, Petzold G, Bremer SCB, Amanzada A, Ellenrieder V, Neesse A, Kunsch S. Endoscopic submucosal dissection with an additional working channel (ESD+): a novel technique to improve procedure time and safety of ESD. Surg Endosc 2020; 35:3506-3512. [PMID: 32676726 PMCID: PMC8195965 DOI: 10.1007/s00464-020-07808-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 07/10/2020] [Indexed: 02/07/2023]
Abstract
Background and aims A new external additional working channel (AWC) was recently introduced by which endoscopic submucosal dissection (ESD) can be converted to a technique termed “ESD+ ”. We aim to systematically evaluate this novel technique in flat gastric lesions and compare it to classical ESD. Methods The study was prospectively conducted in a pre-clinical ex vivo animal model (EASIE-R simulator) with porcine stomachs. Prior to intervention, we set standardized lesions measuring 3 cm or 4 cm in antegrade as well as in retrograde positions. Results Overall, 64 procedures were performed by an experienced endoscopist. Both techniques were reliable and showed en bloc resection rates of 100%. Overall, ESD+ reduced time of procedure compared to ESD (24.5 vs. 32.5 min, p = 0.025*). Particularly, ESD+ was significantly faster in retrograde lesions with a median of 22.5 vs. 34.0 min in 3 cm retrograde lesions (p = 0.002*) and 34.5 vs. 41.0 min (p = 0.011*) in 4 cm retrograde lesions. There were 0 perforations with both techniques. In ESD+ , 1 muscularis damage occurred (3.13%) compared to 6 muscularis damages with ESD (18.75%, p = 0.045*). Conclusions By its grasp-and-mobilize technique, ESD+ allows potentially faster and safer resections of flat gastric lesions compared to conventional ESD in an ex vivo porcine model. The potential advantages of ESD+ in terms of procedure time may be particularly relevant for difficult lesions in retrograde positions. Electronic supplementary material The online version of this article (10.1007/s00464-020-07808-w) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Richard F Knoop
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Edris Wedi
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Golo Petzold
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Sebastian C B Bremer
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Ahmad Amanzada
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Volker Ellenrieder
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Albrecht Neesse
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany
| | - Steffen Kunsch
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, 37075, Göttingen, Germany.
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Sportes A, Cfm J, Gromski MA, Koehler P, Seif Amir Hosseini A, Kauffmann P, Ellenrieder V, Wedi E. Novel modified endoscopic mucosal resection of large GI lesions (> 20 mm) using an external additional working channel (AWC) may improve R0 resection rate: initial clinical experience. BMC Gastroenterol 2020; 20:195. [PMID: 32560696 PMCID: PMC7304141 DOI: 10.1186/s12876-020-01344-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 06/11/2020] [Indexed: 02/07/2023] Open
Abstract
Background En-bloc resection of large, flat dysplastic mucosal lesions of the luminal GI tract can be challenging. In order to improve the efficacy of resection for lesions ≥2 cm and to optimize R0 resection rates of lesions suspected of harboring high-grade dysplasia or early adenocarcinoma, a novel grasp and snare EMR technique utilizing a novel over the scope additional accessory channel, termed EMR Plus (EMR+), was developed. The aim of this pilot study is to describe the early safety and efficacy data from the first in human clinical cases. Methods A novel external over-the-scope additional working channel (AWC) (Ovesco, Tuebingen, Germany) was utilized for the EMR+ procedure, allowing a second endoscopic device to be used through the AWC while using otherwise standard endoscopic equipment. The EMR+ technique allows tissue retraction and a degree of triangulation during endoscopic resection. We performed EMR+ procedure in 6 patients between 02/2018–12/2018 for lesions in the upper and lower GI tract. Results The EMR+ technique utilizing the AWC was performed successfully in 6 resection procedures of the upper and/or lower GI tract in 6 patients in 2 endoscopy centers. All resections were performed successfully with the EMR+ technique, all achieving an R0 resection. No severe adverse events occurred in any of the procedures. Conclusions The EMR+ technique, utilizing an additional working channel, had an acceptable safety and efficacy profile in this preliminary study demonstrating it’s first use in humans. This technique may allow an additional option to providers to remove complex, large mucosal-based lesions in the GI tract using standard endoscopic equipment and a novel AWC device.
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Affiliation(s)
- A Sportes
- Department of Gastroenterology, Institut Arnault Tzanck, Saint Laurent du Var, France
| | - Jung Cfm
- Department of Gastroenterology and Gastrointestinal Oncology, Interdisciplinary Endoscopy, University Medical Center, Georg-August-University, 37075, Goettingen, Germany
| | - M A Gromski
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - P Koehler
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, Mariensee, Germany
| | - A Seif Amir Hosseini
- Department of Diagnostic and Interventional Radiology, University Medical Center, Göttingen, Germany
| | - P Kauffmann
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Göttingen, Germany
| | - V Ellenrieder
- Department of Gastroenterology and Gastrointestinal Oncology, Interdisciplinary Endoscopy, University Medical Center, Georg-August-University, 37075, Goettingen, Germany
| | - E Wedi
- Department of Gastroenterology and Gastrointestinal Oncology, Interdisciplinary Endoscopy, University Medical Center, Georg-August-University, 37075, Goettingen, Germany.
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