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Yang DH, Luvsandagva B, Tran QT, Fauzi A, Piyachaturawat P, Soe T, Wong Z, Byeon JS. Colonoscopic Polypectomy Preferences of Asian Endoscopists: Results of a Survey-Based Study. Gut Liver 2021; 15:391-400. [PMID: 32839364 PMCID: PMC8129667 DOI: 10.5009/gnl20140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/14/2020] [Accepted: 06/26/2020] [Indexed: 11/23/2022] Open
Abstract
Background/Aims The clinical practice pattern of polypectomy is not well-investigated in Asian countries. We aimed to survey Asian endoscopists about their preferred polypectomy techniques for given conditions and images of polyps. Methods A survey was performed using questionnaires composed of two parts a scenario-based questionnaire using scenarios of polyps, which were adopted from the European Society of Gastrointestinal Endoscopy guidelines, and an image-based questionnaire using provided endoscopic images of polyps. Results A total of 154 endoscopists participated in this survey. The most preferred resection techniques for diminutive (≤5 mm), small (6–9 mm), and benign-looking intermediate (10–19 mm) nonpedunculated polyps were cold forceps polypectomy, hot snare polypectomy, and endoscopic mucosal resection (EMR), respectively, in both the scenario- and image-based questionnaires. For benign-looking large (≥20 mm) nonpedunculated polyps, EMR and endoscopic submucosal dissection (ESD) were preferred in the scenario- and image-based surveys, respectively. In case of malignant nonpedunculated polyps, EMR and ESD were preferred for intermediate-sized and large lesions, respectively, according to the scenario-based survey. However, ESD was preferred in both intermediate-sized and large malignant nonpedunculated polyps according to the image-based survey. Trainee endoscopists, endoscopists working in referral centers, and endoscopists in the colorectal cancer–prevalent countries were independently associated with preference of cold snare polypectomy for removing small polyps. Conclusions The polypectomy practice patterns of Asian endoscopists vary, and cold snare polypectomy was not the most preferred resection method for polyps <10 mm in size, in contrast to recent guidelines. (Gut Liver 2021;15-400)
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Affiliation(s)
- Dong-Hoon Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Bayasgalan Luvsandagva
- Department of Endoscopy, Ulaanbaatar Songdo Hospital, Ulaanbaatar, Mongolia.,Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Quang Trung Tran
- Department of Internal Medicine, University of Medicine and Pharmacy, Hue University, Hue, Vietnam.,Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Achmad Fauzi
- Division of Gastroenterology, Department of Internal Medicine, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
| | - Panida Piyachaturawat
- Division of Gastroenterology, Department of Medicine, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Thida Soe
- Department of Gastroenterology, University of Medicine 1 Yangon, Yangon, Myanmar
| | - Zhiqin Wong
- Gastroentorology Unit, Department of Medicine, Faculty of Medicine, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Jeong-Sik Byeon
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Bhandari P, Longcroft-Wheaton G, Libanio D, Pimentel-Nunes P, Albeniz E, Pioche M, Sidhu R, Spada C, Anderloni A, Repici A, Haidry R, Barthet M, Neumann H, Antonelli G, Testoni A, Ponchon T, Siersema PD, Fuccio L, Hassan C, Dinis-Ribeiro M. Revising the European Society of Gastrointestinal Endoscopy (ESGE) research priorities: a research progress update. Endoscopy 2021; 53:535-554. [PMID: 33822332 DOI: 10.1055/a-1397-3005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND One of the aims of the European Society of Gastrointestinal Endoscopy (ESGE) is to encourage high quality endoscopic research at a European level. In 2016, the ESGE research committee published a set of research priorities. As endoscopic research is flourishing, we aimed to review the literature and determine whether endoscopic research over the last 4 years had managed to address any of our previously published priorities. METHODS As the previously published priorities were grouped under seven different domains, a working party with at least two European experts was created for each domain to review all the priorities under that domain. A structured review form was developed to standardize the review process. The group conducted an extensive literature search relevant to each of the priorities and then graded the priorities into three categories: (1) no longer a priority (well-designed trial, incorporated in national/international guidelines or adopted in routine clinical practice); (2) remains a priority (i. e. the above criterion was not met); (3) redefine the existing priority (i. e. the priority was too vague with the research question not clearly defined). RESULTS The previous ESGE research priorities document published in 2016 had 26 research priorities under seven domains. Our review of these priorities has resulted in seven priorities being removed from the list, one priority being partially removed, another seven being redefined to make them more precise, with eleven priorities remaining unchanged. This is a reflection of a rapid surge in endoscopic research, resulting in 27 % of research questions having already been answered and another 27 % requiring redefinition. CONCLUSIONS Our extensive review process has led to the removal of seven research priorities from the previous (2016) list, leaving 19 research priorities that have been redefined to make them more precise and relevant for researchers and funding bodies to target.
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Affiliation(s)
- Pradeep Bhandari
- Department of Gastroenterology, Portsmouth University Hospital NHS Trust, Portsmouth, UK
| | | | - Diogo Libanio
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal.,Center for Research in Health Technologies and Information Systems (CINTESIS), Faculty of Medicine, Porto, Portugal
| | - Pedro Pimentel-Nunes
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal.,Center for Research in Health Technologies and Information Systems (CINTESIS), Faculty of Medicine, Porto, Portugal
| | - Eduardo Albeniz
- Gastroenterology Department, Endoscopy Unit, Complejo Hospitalario de Navarra, Navarrabiomed-UPNA-IdiSNA, Pamplona, Spain
| | - Mathieu Pioche
- Gastroenterology Division, Edouard Herriot Hospital, Lyon, France
| | - Reena Sidhu
- Academic Department of Gastroenterology, Royal Hallamshire Hospital, Sheffield, UK
| | - Cristiano Spada
- Digestive Endoscopy and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | - Andrea Anderloni
- Gastroenterology and Digestive Endoscopy Unit, Ospedale dei Castelli, Ariccia, Rome, Italy
| | - Alessandro Repici
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,Digestive Endoscopy Unit, IRCSS Humanitas Research Hospital, Milan, Italy
| | - Rehan Haidry
- Department of Gastroenterology, University College London Hospitals, London, UK
| | - Marc Barthet
- Department of Gastroenterology, Hôpital Nord, Assistance publique des hôpitaux de Marseille, Marseille, France
| | - Helmut Neumann
- Department of Medicine I, University Medical Center Mainz, Mainz, Germany.,GastroZentrum Lippe, Bad Salzuflen, Germany
| | - Giulio Antonelli
- Gastroenterology and Digestive Endoscopy Unit, Ospedale dei Castelli, Ariccia, Rome, Italy.,Nuovo Regina Margherita Hospital, Rome, Italy.,Department of Translational and Precision Medicine, "Sapienza" University of Rome, Rome, Italy
| | | | - Thierry Ponchon
- Gastroenterology Division, Edouard Herriot Hospital, Lyon, France
| | - Peter D Siersema
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Lorenzo Fuccio
- Department of Medical and Surgical Sciences, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | | | - Mario Dinis-Ribeiro
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal.,Center for Research in Health Technologies and Information Systems (CINTESIS), Faculty of Medicine, Porto, Portugal
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Tanaka S, Saitoh Y, Matsuda T, Igarashi M, Matsumoto T, Iwao Y, Suzuki Y, Nozaki R, Sugai T, Oka S, Itabashi M, Sugihara KI, Tsuruta O, Hirata I, Nishida H, Miwa H, Enomoto N, Shimosegawa T, Koike K. Evidence-based clinical practice guidelines for management of colorectal polyps. J Gastroenterol 2021; 56:323-335. [PMID: 33710392 PMCID: PMC8005396 DOI: 10.1007/s00535-021-01776-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/27/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND The Japanese Society of Gastroenterology (JSGE) published ''Daicho Polyp Shinryo Guideline 2014'' in Japanese and a part of this guideline was published in English as "Evidence-based clinical practice guidelines for management of colorectal polyps" in the Journal of Gastroenterology in 2015. A revised version of the Japanese-language guideline was published in 2020, and here we introduce a part of the contents of revised version. METHODS The guideline committee discussed and drew up a series of clinical questions (CQs). Recommendation statements for the CQs were limited to items with multiple therapeutic options. Items with established conclusions that had 100% agreement with previous guidelines (background questions) and items with no (or old) evidence that are topics for future research (future research questions: FRQs) were given descriptions only. To address the CQs and FRQs, PubMed, ICHUSHI, and other sources were searched for relevant articles published in English from 1983 to October 2018 and articles published in Japanese from 1983 to November 2018. The Japan Medical Library Association was also commissioned to search for relevant materials. Manual searches were performed for questions with insufficient online references. RESULTS The professional committee created 18 CQs and statements concerning the current concept and diagnosis/treatment of various colorectal polyps, including their epidemiology, screening, pathophysiology, definition and classification, diagnosis, management, practical treatment, complications, and surveillance after treatment, and other colorectal lesions (submucosal tumors, nonneoplastic polyps, polyposis, hereditary tumors, ulcerative colitis-associated tumors/carcinomas). CONCLUSIONS After evaluation by the moderators, evidence-based clinical practice guidelines for management of colorectal polyps were proposed for 2020. This report addresses the therapeutic related CQs introduced when formulating these guidelines.
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Affiliation(s)
- Shinji Tanaka
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan.
- Department of Endoscopy, Hiroshima University Hospital, 1-2-3 Minami-ku, KasumiHiroshima, 734-8551, Japan.
| | - Yusuke Saitoh
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Takahisa Matsuda
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Masahiro Igarashi
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Takayuki Matsumoto
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Yasushi Iwao
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Yasumoto Suzuki
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Ryoichi Nozaki
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Tamotsu Sugai
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Shiro Oka
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Michio Itabashi
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Ken-Ichi Sugihara
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Osamu Tsuruta
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Ichiro Hirata
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Hiroshi Nishida
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Hiroto Miwa
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Nobuyuki Enomoto
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Tooru Shimosegawa
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Kazuhiko Koike
- Guidelines Committee for Creating and Evaluating the "Evidence-Based Clinical Practice Guidelines for Management of Colorectal Polyps", the Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Bldg., 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
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Urso EDL, Ponz de Leon M, Vitellaro M, Piozzi GN, Bao QR, Martayan A, Remo A, Stigliano V, Oliani C, Lucci Cordisco E, Pucciarelli S, Ranzani GN, Viel A. Definition and management of colorectal polyposis not associated with APC/MUTYH germline pathogenic variants: AIFEG consensus statement. Dig Liver Dis 2021; 53:409-417. [PMID: 33504457 DOI: 10.1016/j.dld.2020.11.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 02/06/2023]
Abstract
An expert consensus panel convened by the Italian Association for Inherited and Familial Gastrointestinal Tumors (Associazione Italiana per lo Studio della Familiarità ed Ereditarietà dei Tumori Gastrointestinali, AIFEG) reviewed the literature and agreed on a number of position statements regarding the definition and management of polyposis coli without an identified pathogenic mutation on the APC or MUTYH genes, defined in the document as NAMP (non-APC/MUTYH polyposis).
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Affiliation(s)
- Emanuele Damiano Luca Urso
- Clinica Chirurgica I, Department of Surgical, Oncological and Gastroenterological Sciences (DiSCOG), University Hospital of Padua, Italy
| | - Maurizio Ponz de Leon
- Department of Internal Medicine, University of Modena and Reggio Emilia. Retired, Italy
| | - Marco Vitellaro
- Unit of Hereditary Digestive Tract Tumors, Department of Surgery, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy; Colorectal Surgery Unit, Department of Surgery, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy.
| | - Guglielmo Niccolò Piozzi
- Colorectal Surgery Unit, Department of Surgery, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Quoc Riccardo Bao
- Clinica Chirurgica I, Department of Surgical, Oncological and Gastroenterological Sciences (DiSCOG), University Hospital of Padua, Italy
| | - Aline Martayan
- Clinical Pathology Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Andrea Remo
- Pathology Unit, Services Department, ULSS9 Scaligera, Verona, Italy
| | - Vittoria Stigliano
- Division of Gastroenterology and Digestive Endoscopy, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | | | | | - Salvatore Pucciarelli
- Clinica Chirurgica I, Department of Surgical, Oncological and Gastroenterological Sciences (DiSCOG), University Hospital of Padua, Italy
| | | | - Alessandra Viel
- Functional Oncogenomics and Genetics Unit, IRCCS Centro di Riferimento Oncologico di Aviano (CRO), Aviano, Italy
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55
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Jha D, Ali S, Tomar NK, Johansen HD, Johansen D, Rittscher J, Riegler MA, Halvorsen P. Real-Time Polyp Detection, Localization and Segmentation in Colonoscopy Using Deep Learning. IEEE ACCESS : PRACTICAL INNOVATIONS, OPEN SOLUTIONS 2021; 9:40496-40510. [PMID: 33747684 PMCID: PMC7968127 DOI: 10.1109/access.2021.3063716] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 02/15/2021] [Indexed: 05/16/2023]
Abstract
Computer-aided detection, localisation, and segmentation methods can help improve colonoscopy procedures. Even though many methods have been built to tackle automatic detection and segmentation of polyps, benchmarking of state-of-the-art methods still remains an open problem. This is due to the increasing number of researched computer vision methods that can be applied to polyp datasets. Benchmarking of novel methods can provide a direction to the development of automated polyp detection and segmentation tasks. Furthermore, it ensures that the produced results in the community are reproducible and provide a fair comparison of developed methods. In this paper, we benchmark several recent state-of-the-art methods using Kvasir-SEG, an open-access dataset of colonoscopy images for polyp detection, localisation, and segmentation evaluating both method accuracy and speed. Whilst, most methods in literature have competitive performance over accuracy, we show that the proposed ColonSegNet achieved a better trade-off between an average precision of 0.8000 and mean IoU of 0.8100, and the fastest speed of 180 frames per second for the detection and localisation task. Likewise, the proposed ColonSegNet achieved a competitive dice coefficient of 0.8206 and the best average speed of 182.38 frames per second for the segmentation task. Our comprehensive comparison with various state-of-the-art methods reveals the importance of benchmarking the deep learning methods for automated real-time polyp identification and delineations that can potentially transform current clinical practices and minimise miss-detection rates.
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Affiliation(s)
- Debesh Jha
- SimulaMet0167OsloNorway
- Department of Engineering ScienceBig Data Institute, University of OxfordOxfordOX3 7XFU.K.
| | - Sharib Ali
- Department of Engineering ScienceBig Data Institute, University of OxfordOxfordOX3 7XFU.K.
- Oxford NIHR Biomedical Research CentreOxfordOX4 2PGvU.K.
| | | | - Håvard D. Johansen
- Department of Computer ScienceUiT–The Arctic University of Norway9037TromsøNorway
| | - Dag Johansen
- Department of Computer ScienceUiT–The Arctic University of Norway9037TromsøNorway
| | - Jens Rittscher
- Department of Engineering ScienceBig Data Institute, University of OxfordOxfordOX3 7XFU.K.
- Oxford NIHR Biomedical Research CentreOxfordOX4 2PGvU.K.
| | | | - Pål Halvorsen
- SimulaMet0167OsloNorway
- Department of Computer ScienceOslo Metropolitan University0167OsloNorway
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Parsa N, Rex DK, Byrne MF. Colorectal polyp characterization with standard endoscopy: Will Artificial Intelligence succeed where human eyes failed? Best Pract Res Clin Gastroenterol 2021; 52-53:101736. [PMID: 34172255 DOI: 10.1016/j.bpg.2021.101736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 01/31/2023]
Abstract
The American Society for Gastrointestinal Endoscopy (ASGE) has proposed the "resect-and-discard" and "diagnose-and-leave" strategies for diminutive colorectal polyps to reduce the costs of unnecessary polyp resection and pathology evaluation. However, the diagnostic thresholds set by these guidelines are not always met in community practice. To overcome this sub-optimal performance, artificial intelligence (AI) has been applied to the field of endoscopy. The incorporation of deep learning algorithms with AI models resulted in highly accurate systems that match the expert endoscopists' optical biopsy and exceed the ASGE recommended thresholds. Recent studies have demonstrated that the integration of AI in clinical practice results in significant improvement in endoscopists' diagnostic accuracy while reducing the time to make a diagnosis. Yet, several points need to be addressed before AI models can be successfully implemented in clinical practice. In this review, we summarize the recent literature on the application of AI for characterization of colorectal polyps, and review the current limitation and future directions for this field.
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Affiliation(s)
- Nasim Parsa
- University of Missouri, Department of Medicine, Division of Gastroenterology and Hepatology, Columbia, MO, United States
| | - Douglas K Rex
- Indiana University School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, Indianapolis, IN, United States
| | - Michael F Byrne
- University of British Columbia, Department of Medicine, Division of Gastroenterology and Hepatology Vancouver, British Columbia, Canada; Satisfai Health and AI4GI Joint Venture, Vancouver, British Columbia, Canada.
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57
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58
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Zhang Y, Zhang X, Wu Q, Gu C, Wang Z. Artificial Intelligence-Aided Colonoscopy for Polyp Detection: A Systematic Review and Meta-Analysis of Randomized Clinical Trials. J Laparoendosc Adv Surg Tech A 2021; 31:1143-1149. [PMID: 33524298 DOI: 10.1089/lap.2020.0777] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background: This study aimed to compare artificial intelligence (AI)-aided colonoscopy with conventional colonoscopy for polyp detection. Methods: A systematic literature search was performed in PubMed and Ovid for randomized clinical trials (RCTs) comparing AI-aided colonoscopy with conventional colonoscopy for polyp detection. The last search was performed on July 22, 2020. The primary outcome was polyp detection rate (PDR) and adenoma detection rate (ADR). Results: Seven RCTs published between 2019 and 2020 with a total of 5427 individuals were included. When compared with conventional colonoscopy, AI-aided colonoscopy significantly improved PDR (P < .001, odds ratio [OR] = 1.95, 95% confidence interval [CI]: 1.75 to 2.19, I2 = 0%) and ADR (P < .001, OR = 1.72, 95% CI: 1.52 to 1.95, I2 = 33%). Besides, polyps in the AI-aided group were significantly smaller in size than those in conventional group (P = .004, weighted mean difference = -0.48, 95% CI: -0.81 to -0.15, I2 = 0%). In addition, AI-aided group detected significantly less proportion of advanced adenoma (P = .03, OR = 0.70, 95% CI: 0.50 to 0.97, I2 = 46%), pedicle polyps (P < .001, OR = 0.64, 95% CI: 0.49 to 0.83, I2 = 0%), and pedicle adenomas (P < .001, OR = 0.60, 95% CI: 0.44 to 0.80, I2 = 0%). Conclusion: AI-aided colonoscopy could significantly increase the PDR and ADR, especially for those with small size. Besides, the shape and pathology recognition of the AI technique should be further improved in the future.
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Affiliation(s)
- Yuanchuan Zhang
- Department of General Surgery, The Third People's Hospital of Chengdu, Chengdu, China
| | - Xubing Zhang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Qingbin Wu
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Chaoyang Gu
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Ziqiang Wang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
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Honda M, Naoe H, Gushima R, Miyamoto H, Tateyama M, Sakurai K, Oda Y, Murakami Y, Tanaka Y. Risk stratification for advanced colorectal neoplasia based on the findings of the index and first surveillance colonoscopies. PLoS One 2021; 16:e0245211. [PMID: 33481809 PMCID: PMC7822265 DOI: 10.1371/journal.pone.0245211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 12/23/2020] [Indexed: 12/24/2022] Open
Abstract
Risk stratification by index colonoscopy is well established for first surveillance endoscopy, but whether the previous two colonoscopies affect the subsequent advanced neoplasias has not been established. Therefore, the subsequent risk based on the findings of the index and first surveillance colonoscopies were investigated. This retrospective, cohort study was conducted in two clinics and included participants who had undergone two or more colonoscopies after index colonoscopy. High-risk was defined as advanced adenoma (≥ 1 cm, or tubulovillous or villous histology, or high-grade dysplasia). Based on the findings of the index and first surveillance colonoscopies, patients were classified into four categories: category A (both colonoscopy findings were normal), category B (no high-risk findings both times), category C (one time high-risk finding), and category D (high-risk findings both times). The incidence of subsequent advanced neoplasia was examined in each category. A total of 13,426 subjects were included and surveyed during the study periods. The subjects in category D had the highest risk of advanced neoplasia (27.4%, n = 32/117). The subjects in category A had the lowest risk (4.0%, n = 225/5,583). The hazard ratio for advanced neoplasia of category D compared to category A was 9.90 (95% Confidence interval 6.82-14.35, P<0.001). Classification based on the findings of index and first surveillance colonoscopies more effectively stratifies the risk of subsequent advanced neoplasia, resulting in more proper allocation of colonoscopy resources after two consecutive colonoscopies.
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Affiliation(s)
- Munenori Honda
- Department of Gastroenterology and Hepatology, Kumamoto University Hospital, Kumamoto, Japan
| | - Hideaki Naoe
- Department of Gastroenterology and Hepatology, Kumamoto University Hospital, Kumamoto, Japan
| | - Ryosuke Gushima
- Department of Gastroenterology and Hepatology, Kumamoto University Hospital, Kumamoto, Japan
| | - Hideaki Miyamoto
- Department of Gastroenterology and Hepatology, Kumamoto University Hospital, Kumamoto, Japan
| | - Masakuni Tateyama
- Department of Gastroenterology and Hepatology, Kumamoto University Hospital, Kumamoto, Japan
| | | | - Yasushi Oda
- Oda GI Endoscopy and Gastroenterology Clinic, Kumamoto, Japan
| | | | - Yasuhito Tanaka
- Department of Gastroenterology and Hepatology, Kumamoto University Hospital, Kumamoto, Japan
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Srinivasan S, Siersema PD, Desai M. Is jumbo biopsy forceps comparable to cold snare for diminutive colorectal polyps? - a meta-analysis. Endosc Int Open 2021; 9:E9-E13. [PMID: 33403230 PMCID: PMC7775805 DOI: 10.1055/a-1293-6965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 09/29/2020] [Indexed: 11/02/2022] Open
Abstract
Background and study aims Diminutive colorectal polyps are increasingly being detected and it is not clear whether jumbo biopsy forceps (JBF) has comparable efficacy to that of cold snare polypectomy (CSP) for management of these lesions. Methods An electronic literature search was performed for studies comparing resection rates of JBF and CSP for diminutive polyps (≤ 5 mm). The primary outcome was incomplete resection rate (IRR). Secondary outcomes included failure of tissue retrieval and complication rates (post-polypectomy bleeding, perforation etc.). Leave-one-out analysis was performed to examine the disproportionate role of any of the studies. Meta-analysis outcomes and heterogeneity (I 2 ) were computed using Comprehensive meta-analysis software. Results A total of 4 studies (3 randomized controlled trials and 1 retrospective study) with 407 patients and 569 total polyps (mean size of 3.62 mm) was included for analysis. IRR of JBF was slightly higher than that of CSP (10.2 % vs 7.2 %) but this was not statistically significantly different (Pooled OR 1.76; 95 % CI 0.94-3.28; I 2 = 0 ). Leave-one-out analysis showed no significant difference in the pooled OR comparison either. Two of the 4 studies reported 0 % failure of tissue retrieval for JBF and 1 % and 4.3 % for CSP. There were no complications for either group from the 2 studies that reported this outcome. The quality of the included studies was moderate to high. Conclusions This systematic review with only limited data shows that JBF and CSP are not statistically different in completely removing diminutive polyps, although careful endoscopic assessment is needed to ensure complete removal of all polyp tissue.
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Affiliation(s)
- Sachin Srinivasan
- Department of Gastroenterology, Kansas City VA Medical Center, Kansas City, MO
| | - Peter D. Siersema
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Madhav Desai
- Department of Gastroenterology, Kansas City VA Medical Center, Kansas City, MO
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Spada C, Hassan C, Bellini D, Burling D, Cappello G, Carretero C, Dekker E, Eliakim R, de Haan M, Kaminski MF, Koulaouzidis A, Laghi A, Lefere P, Mang T, Milluzzo SM, Morrin M, McNamara D, Neri E, Pecere S, Pioche M, Plumb A, Rondonotti E, Spaander MC, Taylor S, Fernandez-Urien I, van Hooft JE, Stoker J, Regge D. Imaging alternatives to colonoscopy: CT colonography and colon capsule. European Society of Gastrointestinal Endoscopy (ESGE) and European Society of Gastrointestinal and Abdominal Radiology (ESGAR) Guideline - Update 2020. Endoscopy 2020; 52:1127-1141. [PMID: 33105507 DOI: 10.1055/a-1258-4819] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
1: ESGE/ESGAR recommend computed tomographic colonography (CTC) as the radiological examination of choice for the diagnosis of colorectal neoplasia.Strong recommendation, high quality evidence.ESGE/ESGAR do not recommend barium enema in this setting.Strong recommendation, high quality evidence. 2: ESGE/ESGAR recommend CTC, preferably the same or next day, if colonoscopy is incomplete. The timing depends on an interdisciplinary decision including endoscopic and radiological factors.Strong recommendation, low quality evidence.ESGE/ESGAR suggests that, in centers with expertise in and availability of colon capsule endoscopy (CCE), CCE preferably the same or the next day may be considered if colonoscopy is incomplete.Weak recommendation, low quality evidence. 3: When colonoscopy is contraindicated or not possible, ESGE/ESGAR recommend CTC as an acceptable and equally sensitive alternative for patients with alarm symptoms.Strong recommendation, high quality evidence.Because of lack of direct evidence, ESGE/ESGAR do not recommend CCE in this situation.Very low quality evidence.ESGE/ESGAR recommend CTC as an acceptable alternative to colonoscopy for patients with non-alarm symptoms.Strong recommendation, high quality evidence.In centers with availability, ESGE/ESGAR suggests that CCE may be considered in patients with non-alarm symptoms.Weak recommendation, low quality evidence. 4: Where there is no organized fecal immunochemical test (FIT)-based population colorectal screening program, ESGE/ESGAR recommend CTC as an option for colorectal cancer screening, providing the screenee is adequately informed about test characteristics, benefits, and risks, and depending on local service- and patient-related factors.Strong recommendation, high quality evidence.ESGE/ESGAR do not suggest CCE as a first-line screening test for colorectal cancer.Weak recommendation, low quality evidence. 5: ESGE/ESGAR recommend CTC in the case of a positive fecal occult blood test (FOBT) or FIT with incomplete or unfeasible colonoscopy, within organized population screening programs.Strong recommendation, moderate quality evidence.ESGE/ESGAR also suggest the use of CCE in this setting based on availability.Weak recommendation, moderate quality evidence. 6: ESGE/ESGAR suggest CTC with intravenous contrast medium injection for surveillance after curative-intent resection of colorectal cancer only in patients in whom colonoscopy is contraindicated or unfeasibleWeak recommendation, low quality evidence.There is insufficient evidence to recommend CCE in this setting.Very low quality evidence. 7: ESGE/ESGAR suggest CTC in patients with high risk polyps undergoing surveillance after polypectomy only when colonoscopy is unfeasible.Weak recommendation, low quality evidence.There is insufficient evidence to recommend CCE in post-polypectomy surveillance.Very low quality evidence. 8: ESGE/ESGAR recommend against CTC in patients with acute colonic inflammation and in those who have recently undergone colorectal surgery, pending a multidisciplinary evaluation.Strong recommendation, low quality evidence. 9: ESGE/ESGAR recommend referral for endoscopic polypectomy in patients with at least one polyp ≥ 6 mm detected at CTC or CCE.Follow-up CTC may be clinically considered for 6 - 9-mm CTC-detected lesions if patients do not undergo polypectomy because of patient choice, comorbidity, and/or low risk profile for advanced neoplasia.Strong recommendation, moderate quality evidence.
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Affiliation(s)
- Cristiano Spada
- Digestive Endoscopy Unit and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy.,Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Cesare Hassan
- Gastroenterology Unit, Nuovo Regina Margherita Hospital, Rome, Italy
| | - Davide Bellini
- Department of Radiological Sciences, Oncology and Pathology, La Sapienza University of Rome, Diagnostic Imaging Unit, I.C.O.T. Hospital Latina, Italy
| | | | - Giovanni Cappello
- Radiology Unit, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Turin, Italy
| | - Cristina Carretero
- Department of Gastroenterology. University of Navarre Clinic, Healthcare Research Institute of Navarre, Pamplona, Spain
| | - Evelien Dekker
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Center location AMC, The Netherlands
| | - Rami Eliakim
- Department of Gastroenterology, Sheba Medical Center , Sackler School of Medicine, Tel-Aviv, Israel
| | - Margriet de Haan
- Department of Radiology, University Medical Center, Utrecht, The Netherlands
| | - Michal F Kaminski
- Departments of Gastroenterological Oncology and Cancer Prevention, The Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Anastasios Koulaouzidis
- Endoscopy Unit, Centre for Liver and Digestive Disorders, University Hospitals, NHS Lothian, Edinburgh, UK
| | - Andrea Laghi
- Department of Surgical-Medical Sciences and Translational Medicine, La Sapienza University of Rome, Italy
| | - Philippe Lefere
- Department of Radiology, Stedelijk Ziekenhuis, Roeselare, Belgium
| | - Thomas Mang
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Sebastian Manuel Milluzzo
- Digestive Endoscopy Unit and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy.,Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Martina Morrin
- RCSI Radiology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Deirdre McNamara
- TAGG Research Centre, Department of Clinical Medicine, Trinity Centre, Tallaght Hospital, Dublin, Ireland
| | - Emanuele Neri
- Diagnostic Radiology 3, Department of Translational Research, University of Pisa, Italy
| | - Silvia Pecere
- Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Mathieu Pioche
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | - Andrew Plumb
- Centre for Medical Imaging, University College London, London, UK
| | | | - Manon Cw Spaander
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Stuart Taylor
- Centre for Medical Imaging, University College London, London, UK
| | | | - Jeanin E van Hooft
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, The Netherlands
| | - Jaap Stoker
- Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Daniele Regge
- Radiology Unit, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Turin, Italy.,University of Turin Medical School, Turin, Italy
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Spada C, Hassan C, Bellini D, Burling D, Cappello G, Carretero C, Dekker E, Eliakim R, de Haan M, Kaminski MF, Koulaouzidis A, Laghi A, Lefere P, Mang T, Milluzzo SM, Morrin M, McNamara D, Neri E, Pecere S, Pioche M, Plumb A, Rondonotti E, Spaander MC, Taylor S, Fernandez-Urien I, van Hooft JE, Stoker J, Regge D. Imaging alternatives to colonoscopy: CT colonography and colon capsule. European Society of Gastrointestinal Endoscopy (ESGE) and European Society of Gastrointestinal and Abdominal Radiology (ESGAR) Guideline – Update 2020. Eur Radiol 2020; 31:2967-2982. [PMID: 33104846 DOI: 10.1007/s00330-020-07413-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cristiano Spada
- Digestive Endoscopy Unit and Gastronenterology, Fondazione Poliambulanza, Brescia, Italy.
- Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy.
| | - Cesare Hassan
- Gastroenterology Unit, Nuovo Regina Margherita Hospital, Rome, Italy
| | - Davide Bellini
- Department of Radiological Sciences, Oncology and Pathology, Diagnostic Imaging Unit, La Sapienza University of Rome, I.C.O.T. Hospital, Latina, Italy
| | | | - Giovanni Cappello
- Radiology Unit, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Turin, Italy
| | - Cristina Carretero
- Department of Gastroenterology, University of Navarre Clinic, Healthcare Research Institute of Navarre, Pamplona, Spain
| | - Evelien Dekker
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Center location AMC, Amsterdam, The Netherlands
| | - Rami Eliakim
- Department of Gastroenterology, Sheba Medical Center, Sackler School of Medicine, Tel-Aviv, Israel
| | - Margriet de Haan
- Department of Radiology, University Medical Center, Utrecht, The Netherlands
| | - Michal F Kaminski
- Departments of Gastroenterological Oncology and Cancer Prevention, The Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Anastasios Koulaouzidis
- Endoscopy Unit, Centre for Liver and Digestive Disorders, University Hospitals, NHS Lothian, Edinburgh, UK
| | - Andrea Laghi
- Department of Surgical-Medical Sciences and Translational Medicine, La Sapienza University of Rome, Rome, Italy
| | - Philippe Lefere
- Department of Radiology, Stedelijk Ziekenhuis, Roeselare, Belgium
| | - Thomas Mang
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Sebastian Manuel Milluzzo
- Digestive Endoscopy Unit and Gastronenterology, Fondazione Poliambulanza, Brescia, Italy
- Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Martina Morrin
- RCSI Radiology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Deirdre McNamara
- TAGG Research Centre, Department of Clinical Medicine, Trinity Centre, Tallaght Hospital, Dublin, Ireland
| | - Emanuele Neri
- Diagnostic Radiology 3, Department of Translational Research, University of Pisa, Pisa, Italy
| | - Silvia Pecere
- Department of Gastroenterology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Mathieu Pioche
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | - Andrew Plumb
- Centre for Medical Imaging, University College London, London, UK
| | | | - Manon Cw Spaander
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Stuart Taylor
- Centre for Medical Imaging, University College London, London, UK
| | | | - Jeanin E van Hooft
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jaap Stoker
- Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Daniele Regge
- Radiology Unit, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Turin, Italy
- University of Turin Medical School, Turin, Italy
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Ünlü M, Uzun E, Bengi G, Sağol Ö, Sarıoğlu S. Molecular characteristics of colorectal hyperplastic polyp subgroups. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 31:573-580. [PMID: 32915145 DOI: 10.5152/tjg.2020.19322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND/AIMS The importance of hyperplastic polyps during colorectal carcinogenesis is appreciated related to the understanding of serrated pathway. The morphologic subtypes of hyperplastic polyps in carcinogenesis and the nomenculature of lesions with both hyperplastic and adenomatous areas are controversial. We aimed to reveal the molecular properties of hyperplastic polyp subtypes and the molecular changes in polyps containing both hyperplastic and adenomatous areas. Matherial and Methods: 49 hyperplastic polyps [19 microvesicular (MVHP), 19 goblet-rich (GRHP), 11 mucin-poor (MPHP)] and 10 mixed hyperplastic and adenomatous polyps were analysed for KRAS, BRAF mutations and MSI with real-time PCR. RESULTS 68,4% of MVHPs and 81% of MPHPs which were localized in right colon had BRAF mutations. While none of the GRHPs showing a KRAS mutation with a rate of 73% was localized in the ascending colon, 63% of them were localized in the rectosigmoid area. In five (50%) of the mixed polyps, KRAS mutation was detected both in the hyperplastic and adenoma components. There was no BRAF mutation in any of the mixed polyps. However, in two cases, the hyperplastic component was MSI-H and the adenoma area was MSS. CONCLUSION Hyperplastic polyps, even if smaller than 5 mm, are precancerous lesions bearing different mutations. GRHPs with predominant KRAS mutations and MVHPs and MPHSs with predominant BRAF mutations are precancerous. Although the molecular investigations for HPP/SP are not necessary the morphological subtyping should be included if the case is diagnosed with HPP/SP as it will be useful for attracting the gastroenterologist's attention.
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Affiliation(s)
- Mehtat Ünlü
- Department of Pathology, Dokuz Eylül University School of Medicine, İzmir, Turkey
| | - Evren Uzun
- Department of Pathology, Dokuz Eylül University School of Medicine, İzmir, Turkey
| | - Göksel Bengi
- Department of Gastroenterology, Dokuz Eylül University School of Medicine, İzmir, Turkey
| | - Özgül Sağol
- Department of Pathology, Dokuz Eylül University School of Medicine, İzmir, Turkey
| | - Sülen Sarıoğlu
- Department of Pathology, Dokuz Eylül University School of Medicine, İzmir, Turkey
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Ricci ZJ, Kobi M, Flusberg M, Yee J. CT Colonography in Review With Tips and Tricks to Improve Performance. Semin Roentgenol 2020; 56:140-151. [PMID: 33858640 DOI: 10.1053/j.ro.2020.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zina J Ricci
- Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY.
| | - Mariya Kobi
- Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY
| | - Milana Flusberg
- Westchester Medical Center/New York Medical College, Valhalla, NY
| | - Judy Yee
- Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY
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65
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Jin EH, Lee D, Bae JH, Kang HY, Kwak MS, Seo JY, Yang JI, Yang SY, Lim SH, Yim JY, Lim JH, Chung GE, Chung SJ, Choi JM, Han YM, Kang SJ, Lee J, Chan Kim H, Kim JS. Improved Accuracy in Optical Diagnosis of Colorectal Polyps Using Convolutional Neural Networks with Visual Explanations. Gastroenterology 2020; 158:2169-2179.e8. [PMID: 32119927 DOI: 10.1053/j.gastro.2020.02.036] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/10/2020] [Accepted: 02/20/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Narrow-band imaging (NBI) can be used to determine whether colorectal polyps are adenomatous or hyperplastic. We investigated whether an artificial intelligence (AI) system can increase the accuracy of characterizations of polyps by endoscopists of different skill levels. METHODS We developed convolutional neural networks (CNNs) for evaluation of diminutive colorectal polyps, based on efficient neural architecture searches via parameter sharing with augmentation using NBIs of diminutive (≤5 mm) polyps, collected from October 2015 through October 2017 at the Seoul National University Hospital, Healthcare System Gangnam Center (training set). We trained the CNN using images from 1100 adenomatous polyps and 1050 hyperplastic polyps from 1379 patients. We then tested the system using 300 images of 180 adenomatous polyps and 120 hyperplastic polyps, obtained from January 2018 to May 2019. We compared the accuracy of 22 endoscopists of different skill levels (7 novices, 4 experts, and 11 NBI-trained experts) vs the CNN in evaluation of images (adenomatous vs hyperplastic) from 180 adenomatous and 120 hyperplastic polyps. The endoscopists then evaluated the polyp images with knowledge of the CNN-processed results. We conducted mixed-effect logistic and linear regression analyses to determine the effects of AI assistance on the accuracy of analysis of diminutive colorectal polyps by endoscopists (primary outcome). RESULTS The CNN distinguished adenomatous vs hyperplastic diminutive polyps with 86.7% accuracy, based on histologic analysis as the reference standard. Endoscopists distinguished adenomatous vs hyperplastic diminutive polyps with 82.5% overall accuracy (novices, 73.8% accuracy; experts, 83.8% accuracy; and NBI-trained experts, 87.6% accuracy). With knowledge of the CNN-processed results, the overall accuracy of the endoscopists increased to 88.5% (P < .05). With knowledge of the CNN-processed results, the accuracy of novice endoscopists increased to 85.6% (P < .05). The CNN-processed results significantly reduced endoscopist time of diagnosis (from 3.92 to 3.37 seconds per polyp, P = .042). CONCLUSIONS We developed a CNN that significantly increases the accuracy of evaluation of diminutive colorectal polyps (as adenomatous vs hyperplastic) and reduces the time of diagnosis by endoscopists. This AI assistance system significantly increased the accuracy of analysis by novice endoscopists, who achieved near-expert levels of accuracy without extra training. The CNN assistance system can reduce the skill-level dependence of endoscopists and costs.
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Affiliation(s)
- Eun Hyo Jin
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Dongheon Lee
- Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul, Korea
| | - Jung Ho Bae
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Hae Yeon Kang
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Min-Sun Kwak
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Ji Yeon Seo
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Jong In Yang
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Sun Young Yang
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Seon Hee Lim
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Jeong Yoon Yim
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Joo Hyun Lim
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Goh Eun Chung
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Su Jin Chung
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Ji Min Choi
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Yoo Min Han
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Seung Joo Kang
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Jooyoung Lee
- Department of Internal Medicine, Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hee Chan Kim
- Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul, Korea; Department of Biomedical Engineering College of Medicine, Seoul National University, Seoul, Korea; Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, Seoul, Korea.
| | - Joo Sung Kim
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea; Department of Internal Medicine, Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea.
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Willems P, Djinbachian R, Ditisheim S, Orkut S, Pohl H, Barkun A, Bouin M, Faulques B, von Renteln D. Uptake and barriers for implementation of the resect and discard strategy: an international survey. Endosc Int Open 2020; 8:E684-E692. [PMID: 32355888 PMCID: PMC7165012 DOI: 10.1055/a-1132-5371] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/04/2019] [Indexed: 02/06/2023] Open
Abstract
Background and study aims Optical real-time diagnosis (= resect-and-discard strategy) is an alternative to histopathology for diminutive colorectal polyps. However, clinical adoption of this approach seems sparse. We were interested in evaluating potential clinical uptake and barriers for implementation of this approach. Methods We conducted an international survey using the "Google forms" platform. Nine endoscopy societies distributed the survey. Survey questions measured current clinical uptake and barriers for implementing the resect-and-discard strategy , perceived cancer risk associated with diminutive polyps and potential concerns with using CT-colonography as follow-up, as well as non-resection of diminutive polyps. Results Eight hundred and eight endoscopists participated in the survey. 84.2 % (95 % CI 81.6 %-86.7 %) of endoscopists are currently not using the resect-and-discard strategy and 59.9 % (95 % CI 56.5 %-63.2 %) do not believe that the resect-and-discard strategy is feasible for implementation in its current form. European (38.5 %) and Asian (45 %) endoscopists had the highest rates of resect-and-discard practice, while Canadian (13.8 %) and American (5.1 %) endoscopists had some of the lowest implementation rates. 80.3 % (95 % CI 77.5 %-83.0 %) of endoscopists believe that using the resect-and-discard strategy for diminutive polyps will not increase cancer risk. 48.4 % (95 % CI 45.0 %-51.9 %) of endoscopists believe that leaving diminutive polyps in place is associated with increased cancer risk. This proportion was slightly higher (54.7 %; 95 % CI 53.6 %-60.4 %) when asked if current CT-colonography screening practice might increase cancer risks. Conclusion Clinical uptake of resect-and-discard is very low. Most endoscopists believe that resect-and-discard is not feasible for clinical implementation in its current form. The most important barriers for implementation are fear of making an incorrect diagnosis, assigning incorrect surveillance intervals and medico-legal consequences.
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Affiliation(s)
- Philippe Willems
- Division of Internal Medicine, Montreal University Hospital Center (CHUM), Montreal, Canada
- Montreal University Hospital Research Center (CRCHUM), Montreal, Canada.
| | - Roupen Djinbachian
- Division of Internal Medicine, Montreal University Hospital Center (CHUM), Montreal, Canada
- Montreal University Hospital Research Center (CRCHUM), Montreal, Canada.
| | - Saskia Ditisheim
- Montreal University Hospital Research Center (CRCHUM), Montreal, Canada.
- Division of Gastroenterology, Montreal University Hospital Center (CHUM), Montreal, Canada
| | - Sinan Orkut
- Faculty of Medicine, University of Strasbourg, Strasbourg, France
| | - Heiko Pohl
- Department of Veterans Affairs Medical Center, White River Junction, Vermont, and Dartmouth Geisel School of Medicine, Hanover, New Hampshire, United States
| | - Alan Barkun
- Division of Gastroenterology, McGill University Health Center, McGill University, Montreal, Canada
| | - Mickael Bouin
- Montreal University Hospital Research Center (CRCHUM), Montreal, Canada.
- Division of Gastroenterology, Montreal University Hospital Center (CHUM), Montreal, Canada
| | - Bernard Faulques
- Montreal University Hospital Research Center (CRCHUM), Montreal, Canada.
- Division of Gastroenterology, Montreal University Hospital Center (CHUM), Montreal, Canada
| | - Daniel von Renteln
- Montreal University Hospital Research Center (CRCHUM), Montreal, Canada.
- Division of Gastroenterology, Montreal University Hospital Center (CHUM), Montreal, Canada
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67
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Rex DK. Can we do resect and discard with artificial intelligence-assisted colon polyp “optical biopsy?”. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.tgie.2019.150638] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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68
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Wang P, Liu X, Berzin TM, Glissen Brown JR, Liu P, Zhou C, Lei L, Li L, Guo Z, Lei S, Xiong F, Wang H, Song Y, Pan Y, Zhou G. Effect of a deep-learning computer-aided detection system on adenoma detection during colonoscopy (CADe-DB trial): a double-blind randomised study. Lancet Gastroenterol Hepatol 2020; 5:343-351. [PMID: 31981517 DOI: 10.1016/s2468-1253(19)30411-x] [Citation(s) in RCA: 256] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Pu Wang
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Xiaogang Liu
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Tyler M Berzin
- Center for Advanced Endoscopy, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Jeremy R Glissen Brown
- Center for Advanced Endoscopy, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Peixi Liu
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Chao Zhou
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Lei Lei
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Liangping Li
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Zhenzhen Guo
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Shan Lei
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Fei Xiong
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Han Wang
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Yan Song
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Yan Pan
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China
| | - Guanyu Zhou
- Department of Gastroenterology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China.
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Abstract
OBJECTIVES Reliable in situ diagnosis of diminutive (≤5 mm) colorectal polyps could allow for "resect and discard" and "diagnose and leave" strategies, resulting in $1 billion cost savings per year in the United States alone. Current methodologies have failed to consistently meet the Preservation and Incorporation of Valuable endoscopic Innovations (PIVIs) initiative thresholds. Convolutional neural networks (CNNs) have the potential to predict polyp pathology and achieve PIVI thresholds in real time. METHODS We developed a CNN-based optical pathology (OP) model using Tensorflow and pretrained on ImageNet, capable of operating at 77 frames per second. A total of 6,223 images of unique colorectal polyps of known pathology, location, size, and light source (white light or narrow band imaging [NBI]) underwent 5-fold cross-training (80%) and validation (20%). Separate fresh validation was performed on 634 polyp images. Surveillance intervals were calculated, comparing OP with true pathology. RESULTS In the original validation set, the negative predictive value for adenomas was 97% among diminutive rectum/rectosigmoid polyps. Results were independent of use of NBI or white light. Surveillance interval concordance comparing OP and true pathology was 93%. In the fresh validation set, the negative predictive value was 97% among diminutive polyps in the rectum and rectosigmoid and surveillance concordance was 94%. DISCUSSION This study demonstrates the feasibility of in situ diagnosis of colorectal polyps using CNN. Our model exceeds PIVI thresholds for both "resect and discard" and "diagnose and leave" strategies independent of NBI use. Point-of-care adenoma detection rate and surveillance recommendations are potential added benefits.
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70
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Artificial Intelligence for the Determination of a Management Strategy for Diminutive Colorectal Polyps: Hype, Hope, or Help. Am J Gastroenterol 2020; 115:70-72. [PMID: 31770118 DOI: 10.14309/ajg.0000000000000476] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Most colorectal polyps are diminutive, and malignant potential for these polyps is uncommon, especially for those in the rectosigmoid. However, many diminutive polyps are still being resected to determine whether these are adenomas or serrated/hyperplastic polyps. Resecting all the diminutive polyps is not cost-effective. Therefore, gastroenterologists have proposed optical diagnosis using image-enhanced endoscopy for polyp characterization. These technologies have achieved favorable outcomes, but are not widely available. Artificial intelligence has been used in clinical medicine to classify lesions. Here, artificial intelligence technology for the characterization of colorectal polyps is discussed in a decision-making context regarding diminutive colorectal polyps.
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71
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McGill SK, Patel SG. What Is the Hang-Up With Optical Diagnosis of Diminutive Colorectal Polyps? Clin Gastroenterol Hepatol 2019; 17:2429-2433. [PMID: 30981005 DOI: 10.1016/j.cgh.2019.04.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 04/05/2019] [Indexed: 02/07/2023]
Affiliation(s)
- Sarah K McGill
- Department of Medicine, Division of Gastroenterology & Hepatology, University of North Carolina, Chapel Hill, North Carolina
| | - Swati G Patel
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Center, Rocky Mountain Regional Veterans Affairs Hospital, Aurora, Colorado
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72
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Rex DK. Best Practices for Resection of Diminutive and Small Polyps in the Colorectum. Gastrointest Endosc Clin N Am 2019; 29:603-612. [PMID: 31445685 DOI: 10.1016/j.giec.2019.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Diminutive colorectal lesions are polyps and flat lesions 1 to 5 mm in size, and small are 6 to 9 mm in size. The best resection method is the cold snare. Cold forceps are acceptable for 1- to 3-mm lesions, but should not be used to piecemeal polyps. Cold snaring has few complications and is more effective than cold forceps for 4- to 5-mm polyps and as effective and more efficient than hot snaring for 6- to 9-mm polyps.
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Affiliation(s)
- Douglas K Rex
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indiana University Hospital, 550 North University Boulevard, Suite 4100, Indianapolis, IN 46202, USA.
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73
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Abstract
CLINICAL PROBLEM Colorectal cancer (CRC) is a major cause of cancer-related morbidity and mortality. Most colorectal cancers derive from benign precursor lesions, so-called adenomatous polyps, over a long period of time. Colorectal cancer screening is based on the detection of precancerous polyps and early stage CRC in asymptomatic individuals to reduce CRC incidence and mortality. The protective effect of screening programs can be improved by increasing the screening rates. PRACTICAL RECOMMENDATIONS Apart from the established examinations, CT colonography (CTC) has been proposed as an optional test for colorectal cancer screening. The detection rates of CTC for large polyps and cancer are similar to the ones of colonoscopy and superior to stool-based tests. CTC is therefore the radiological test of choice for the detection of colorectal neoplasia. It has replaced double contrast barium enema for almost all indications. As a minimally invasive procedure, CTC has a high safety profile and good patient acceptance. The evaluation of extracolonic organs in addition to the colon can increase examination efficacy. The option to choose CTC as a CRC screening test has the potential to increase the overall screening rates.
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74
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Huh CW, Kim JS, Choi HH, Maeng IS, Jun SY, Kim BW. Jumbo biopsy forceps versus cold snares for removing diminutive colorectal polyps: a prospective randomized controlled trial. Gastrointest Endosc 2019; 90:105-111. [PMID: 30684600 DOI: 10.1016/j.gie.2019.01.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 01/09/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Cold snare polypectomy (CSP) and jumbo forceps polypectomy (JFP) have been shown to be effective for removing diminutive colorectal polyps (DCPs) (≤5 mm). However, no study has compared complete resection rates between CSP and JFP for DCPs. The aim of this study was to compare the efficacy and safety of JFP with CSP for the removal of DCPs. METHODS This was a prospective randomized controlled trial from 2 tertiary-care referral centers. A total of 1003 patients were screened, and 169 patients with 196 DCPs were enrolled. The main outcome was complete polyp resection rate. RESULTS Of 196 diminutive polyps, 177 (90.3%) were adenomatous polyps. The overall complete resection rate was 92.1% (163/177). The complete resection rate was not significantly different between JFP and CSP groups (92.0% vs 92.2%; P = .947). JFP achieved complete resection rates comparable with CSP for polyps >3 mm (90.3% vs 89.8%; P = .928). Polypectomy procedure time, tissue retrieval rate, and rate of postpolypectomy adverse events were not significantly different between the 2 groups. CONCLUSIONS Both JFP and CSP achieved complete resection rates of >90% for DCPs. Thus, JFP may be considered for polypectomy of DCPs. (International clinical trial registry number: KCT0002805.).
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Affiliation(s)
- Cheal Wung Huh
- Division of Gastroenterology, Department of Internal Medicine, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joon Sung Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun Ho Choi
- Division of Gastroenterology, Department of Internal Medicine, Uijeongbu St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - I So Maeng
- Department of Pathology, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sun-Young Jun
- Department of Pathology, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Byung-Wook Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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75
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Endoscopic full-thickness resection for invasive colorectal neoplasia: Hype or here to stay? Gastrointest Endosc 2019; 89:1190-1192. [PMID: 31104749 DOI: 10.1016/j.gie.2019.02.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 02/15/2019] [Indexed: 12/11/2022]
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76
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Rondonotti E, Paggi S, Amato A, Mogavero G, Andrealli A, Conforti FS, Conte D, Spinzi G, Radaelli F. Blue-light imaging compared with high-definition white light for real-time histology prediction of colorectal polyps less than 1 centimeter: a prospective randomized study. Gastrointest Endosc 2019; 89:554-564.e1. [PMID: 30273590 DOI: 10.1016/j.gie.2018.09.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/20/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Blue-light imaging (BLI) is a new chromoendoscopy technique, potentially useful for differentiating neoplastic from nonneoplastic lesions. The present study was aimed at comparing BLI with high-definition white light (HDWL) in the real-time histology prediction of colon polyps <10 mm. METHODS Consecutive outpatients undergoing colonoscopy with the ELUXEO 7000 endoscopy platform and 760 series video colonoscopes (Fujifilm Co, Tokyo, Japan) who had at least 1 polyp <10 mm were randomized to BLI or HDWL for polyp characterization. The accuracy of high-confidence real-time histology prediction (adenoma vs not adenoma) by either BLI or HDWL for polyps <10 mm (primary end-point) and diminutive (≤5 mm) polyps was calculated, along with sensitivity, specificity, and positive and negative predictive values, with histopathology as the reference standard. RESULTS A total of 483 polyps were detected in 245 randomized patients (125 and 120 in the BLI and HDWL arms, respectively). A total of 358 were diminutive, and 283 were adenomas. Overall, 222 (85.7%) and 193 (86.1%) polyps were characterized with high confidence by BLI and HDWL, respectively (P = .887), with an overall accuracy of 92% and 84%, respectively (P = .011). The accuracy was significantly higher by BLI than HDWL, also for diminutive polyps (92% vs 83%; P = .008). When BLI was used, the negative predictive value for diminutive rectosigmoid polyps was 88%, and the post-polypectomy surveillance interval was correctly attributed in 85.7% and 93.7% of patients, respectively, according to U.S. and European guidelines. CONCLUSION BLI was superior to HDWL for the real-time prediction of histology in polyps <10 mm. A BLI-dedicated classification might further improve the endoscopist performance. (Clinical trial registration number: NCT03274115.).
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Affiliation(s)
| | - Silvia Paggi
- Gastroenterology Unit, Valduce Hospital, Como, Italy
| | - Arnaldo Amato
- Gastroenterology Unit, Valduce Hospital, Como, Italy
| | - Giuseppe Mogavero
- Gastroenterology Unit, Valduce Hospital, Como, Italy; Gastroenterology Unit, Biomedical Department of Internal and Specialized Medicine (Di.Bi.M.I.S.), University of Palermo, Palermo, Italy
| | | | - Francesco Simone Conforti
- Gastroenterology Unit, Valduce Hospital, Como, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Dario Conte
- Gastroenterology Unit, Valduce Hospital, Como, Italy
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Vleugels JLA, Hassan C, Senore C, Cassoni P, Baron JA, Rex DK, Ponugoti PL, Pellise M, Parejo S, Bessa X, Arnau-Collell C, Kaminski MF, Bugajski M, Wieszczy P, Kuipers EJ, Melson J, Ma KH, Holman R, Dekker E, Pohl H. Diminutive Polyps With Advanced Histologic Features Do Not Increase Risk for Metachronous Advanced Colon Neoplasia. Gastroenterology 2019; 156:623-634.e3. [PMID: 30395813 DOI: 10.1053/j.gastro.2018.10.050] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 10/19/2018] [Accepted: 10/30/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS With advances in endoscopic imaging, it is possible to differentiate adenomatous from hyperplastic diminutive (1-5 mm) polyps during endoscopy. With the optical Resect-and-Discard strategy, these polyps are then removed and discarded without histopathology assessment. However, failure to recognize adenomas (vs hyperplastic polyps), or discarding a polyp with advanced histologic features, could result in a patient being considered at low risk for metachronous advanced neoplasia, resulting in an inappropriately long surveillance interval. We collected data from international cohorts of patients undergoing colonoscopy to determine what proportion of patients are high risk because of diminutive polyps advanced histologic features and their risk for metachronous advanced neoplasia. METHODS We collected data from 12 cohorts (in the United States or Europe) of patients undergoing colonoscopy after a positive result from a fecal immunochemical test (FIT cohort, n = 34,221) or undergoing colonoscopies for screening, surveillance, or evaluation of symptoms (colonoscopy cohort, n = 30,123). Patients at high risk for metachronous advanced neoplasia were defined as patients with polyps that had advanced histologic features (cancer, high-grade dysplasia, ≥25% villous features), 3 or more diminutive or small (6-9 mm) nonadvanced adenomas, or an adenoma or sessile serrated lesion ≥10 mm. Using an inverse variance random effects model, we calculated the proportion of diminutive polyps with advanced histologic features; the proportion of patients classified as high risk because their diminutive polyps had advanced histologic features; and the risk of these patients for metachronous advanced neoplasia. RESULTS In 51,510 diminutive polyps, advanced histologic features were observed in 7.1% of polyps from the FIT cohort and 1.5% polyps from the colonoscopy cohort (P = .044); however, this difference in prevalence did not produce a significant difference in the proportions of patients assigned to high-risk status (0.8% of patients in the FIT cohort and 0.4% of patients in the colonoscopy cohort) (P = .25). The proportions of high-risk patients because of diminutive polyps with advanced histologic features who were found to have metachronous advanced neoplasia (17.6%) did not differ significantly from the proportion of low-risk patients with metachronous advanced neoplasia (14.6%) (relative risk for high-risk categorization, 1.13; 95% confidence interval 0.79-1.61). CONCLUSION In a pooled analysis of data from 12 international cohorts of patients undergoing colonoscopy for screening, surveillance, or evaluation of symptoms, we found that diminutive polyps with advanced histologic features do not increase risk for metachronous advanced neoplasia.
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Affiliation(s)
- Jasper L A Vleugels
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, location Academic Medical Center, University of Amsterdam, the Netherlands
| | - Cesare Hassan
- Department of Gastroenterology and Hepatology, Humanitas Research Hospital, Humanitas University, Milan, Italy
| | - Carlo Senore
- Epidemiology and screening Unit - CPO, University Hospital Città della Salute e della Scienza, Turin, Italy
| | - Paola Cassoni
- Department of Medical Science, Pathology unit, University of Turin, Turin, Italy
| | - John A Baron
- Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Douglas K Rex
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Prasanna L Ponugoti
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Maria Pellise
- Department of Gastroenterology, Hospital Clínic de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Sofia Parejo
- Department of Gastroenterology, Hospital Ramón y Cajal, Madrid, Spain
| | - Xavier Bessa
- Gastroenterology Department, Hospital del Mar, Barcelona, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Coral Arnau-Collell
- Department of Gastroenterology, Hospital Clínic de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Michal F Kaminski
- Department of Gastroenterological Oncology, Maria Sklodowska-Curie Memorial Cancer Centre, Warsaw, Poland; Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Centre for Postgraduate Education, Warsaw, Poland; Department of Cancer Prevention, Maria Sklodowska-Curie Memorial Cancer Centre, Warsaw, Poland
| | - Marek Bugajski
- Department of Gastroenterological Oncology, Maria Sklodowska-Curie Memorial Cancer Centre, Warsaw, Poland; Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Centre for Postgraduate Education, Warsaw, Poland
| | - Paulina Wieszczy
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Centre for Postgraduate Education, Warsaw, Poland; Department of Cancer Prevention, Maria Sklodowska-Curie Memorial Cancer Centre, Warsaw, Poland
| | - Ernst J Kuipers
- Department of Gastroenterology and Hepatology, Erasmus MC, Rotterdam, the Netherlands
| | - Joshua Melson
- Department of Medicine, Division of Digestive Diseases, Rush University Medical Center, Chicago, Illinois
| | - Karen H Ma
- Department of Medicine, Division of Digestive Diseases, Rush University Medical Center, Chicago, Illinois
| | - Rebecca Holman
- Clinical Research Unit, Amsterdam University Medical Center, location Academic Medical Center, University of Amsterdam, the Netherlands
| | - Evelien Dekker
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, location Academic Medical Center, University of Amsterdam, the Netherlands
| | - Heiko Pohl
- Department of Gastroenterology, Veterans Affairs Medical Center, White River Junction, Vermont.
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Kandel P, Wallace MB. Should We Resect and Discard Low Risk Diminutive Colon Polyps. Clin Endosc 2019; 52:239-246. [PMID: 30661337 PMCID: PMC6547333 DOI: 10.5946/ce.2018.136] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 09/04/2018] [Indexed: 02/06/2023] Open
Abstract
Diminutive colorectal polyps <5 mm are very common and almost universally benign. The current strategy of resection with histological confirmation of all colorectal polyps is costly and may increase the risk of colonoscopy. Accurate, optical diagnosis without histology can be achieved with currently available endoscopic technologies. The American Society of Gastrointestinal Endoscopy Preservation and Incorporation of Valuable endoscopic Innovations supports strategies for optical diagnosis of small non neoplastic polyps as long as two criteria are met. For hyperplastic appearing polyps <5 mm in recto-sigmoid colon, the negative predictive value should be at least 90%. For diminutive low grade adenomatous appearing polyps, a resect and discard strategy should be sufficiently accurate such that post-polypectomy surveillance recommendations based on the optical diagnosis, agree with a histologically diagnosis at least 90% of the time. Although the resect and discard as well as diagnose and leave behind approach has major benefits with regard to both safety and cost, it has yet to be used widely in practice. To fully implement such as strategy, there is a need for better-quality training, quality assurance, and patient acceptance. In the article, we will review the current state of the science on optical diagnose of colorectal polyps and its implications for colonoscopy practice.
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Affiliation(s)
- Pujan Kandel
- Department of Gastroenterology and Hepatology, Mayo Clinic Florida, Jacksonville, FL, USA
| | - Michael B Wallace
- Department of Gastroenterology and Hepatology, Mayo Clinic Florida, Jacksonville, FL, USA
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Maida M, Morreale G, Sinagra E, Ianiro G, Margherita V, Cirrone Cipolla A, Camilleri S. Quality measures improving endoscopic screening of colorectal cancer: a review of the literature. Expert Rev Anticancer Ther 2019; 19:223-235. [PMID: 30614284 DOI: 10.1080/14737140.2019.1565999] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
INTRODUCTION Colorectal cancer (CRC) is a major health-care problem all over the world and CRC screening is effective in reducing mortality and increasing the 5-year survival. Colonoscopy has a central role in CRC screening. It can be performed as a primary test, as a recall policy after a positive result of another screening test, and for surveillance. Since effectiveness of endoscopic screening depends on adequate detection and removal of colonic polyps, consistent quality measures, which are useful in enhancing the diagnostic yield of examination, are essential. Areas covered: The aim of this review is to analyze current evidence from literature supporting quality measures able to refine endoscopic screening of colorectal cancer. Expert commentary: Quality measures namely a) time slot allotted to colonoscopy, b) assessment of indication, c) bowel preparation, d) Cecal intubation, e) withdrawal time, f) adenoma detection rate, g) proper management of lesions (polypectomy technique, polyps retrieval rate and tattooing of resection sites), and h) adequate follow-up intervals play a key role in identifying malignant and at-risk lesions and improving the outcome of screening. Adherence to these quality measures is critical to maximize the effectiveness of CRC screening, as well as, a proper technique of colonoscopy and a quality report of the procedure. Among all recommended measures, adenoma detection rate is the most important and must be kept above the recommended quality threshold by all physicians practicing in the setting of screening.
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Affiliation(s)
- Marcello Maida
- a Section of Gastroenterology , S.Elia - Raimondi Hospital , Caltanissetta , Italy
| | - Gaetano Morreale
- a Section of Gastroenterology , S.Elia - Raimondi Hospital , Caltanissetta , Italy
| | - Emanuele Sinagra
- b Gastroenterology and Endoscopy Unit , Fondazione Istituto San Raffaele Giglio , Cefalù , Italy
| | - Gianluca Ianiro
- c Internal Medicine, Gastroenterology & Liver Unit , Università Cattolica Sacro Cuore , Rome , Italy
| | - Vito Margherita
- d Section of Public Health Epidemiology and Preventive Medicine , S.Elia-Raimondi Hospital , Caltanissetta , Italy
| | - Alfonso Cirrone Cipolla
- d Section of Public Health Epidemiology and Preventive Medicine , S.Elia-Raimondi Hospital , Caltanissetta , Italy
| | - Salvatore Camilleri
- a Section of Gastroenterology , S.Elia - Raimondi Hospital , Caltanissetta , Italy
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Byrne MF, Chapados N, Soudan F, Oertel C, Linares Pérez M, Kelly R, Iqbal N, Chandelier F, Rex DK. Real-time differentiation of adenomatous and hyperplastic diminutive colorectal polyps during analysis of unaltered videos of standard colonoscopy using a deep learning model. Gut 2019; 68:94-100. [PMID: 29066576 PMCID: PMC6839831 DOI: 10.1136/gutjnl-2017-314547] [Citation(s) in RCA: 364] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/20/2017] [Accepted: 10/11/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND In general, academic but not community endoscopists have demonstrated adequate endoscopic differentiation accuracy to make the 'resect and discard' paradigm for diminutive colorectal polyps workable. Computer analysis of video could potentially eliminate the obstacle of interobserver variability in endoscopic polyp interpretation and enable widespread acceptance of 'resect and discard'. STUDY DESIGN AND METHODS We developed an artificial intelligence (AI) model for real-time assessment of endoscopic video images of colorectal polyps. A deep convolutional neural network model was used. Only narrow band imaging video frames were used, split equally between relevant multiclasses. Unaltered videos from routine exams not specifically designed or adapted for AI classification were used to train and validate the model. The model was tested on a separate series of 125 videos of consecutively encountered diminutive polyps that were proven to be adenomas or hyperplastic polyps. RESULTS The AI model works with a confidence mechanism and did not generate sufficient confidence to predict the histology of 19 polyps in the test set, representing 15% of the polyps. For the remaining 106 diminutive polyps, the accuracy of the model was 94% (95% CI 86% to 97%), the sensitivity for identification of adenomas was 98% (95% CI 92% to 100%), specificity was 83% (95% CI 67% to 93%), negative predictive value 97% and positive predictive value 90%. CONCLUSIONS An AI model trained on endoscopic video can differentiate diminutive adenomas from hyperplastic polyps with high accuracy. Additional study of this programme in a live patient clinical trial setting to address resect and discard is planned.
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Affiliation(s)
- Michael F Byrne
- Division of Gastroenterology, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Nicolas Chapados
- Department of Technology, Imagia, Montreal, Quebec, Canada,Department of Applied Mathematics, Ecole Polytechnique de Montreal, Montreal, Quebec, Canada
| | - Florian Soudan
- Department of Technology, Imagia, Montreal, Quebec, Canada
| | - Clemens Oertel
- Department of Technology, Imagia, Montreal, Quebec, Canada
| | | | - Raymond Kelly
- Department of Anaesthetics, Beaumont Hospital, Dublin, Ireland
| | - Nadeem Iqbal
- Department of Gastroenterology, Saint Luke’s Hospital, Kilkenny, Ireland
| | | | - Douglas K Rex
- Division of Gastroenterology and Hepatology, Indiana University Medical Center, Indianapolis, Indiana, USA
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Pickhardt PJ, Pooler BD, Kim DH, Hassan C, Matkowskyj KA, Halberg RB. The Natural History of Colorectal Polyps: Overview of Predictive Static and Dynamic Features. Gastroenterol Clin North Am 2018; 47:515-536. [PMID: 30115435 PMCID: PMC6100796 DOI: 10.1016/j.gtc.2018.04.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
For decades, colorectal screening strategies have been largely driven by static features, particularly polyp size. Although cross-sectional features of polyp size, morphology, and location are important determinants of clinical relevance before histology, they lack any dynamic information on polyp growth rates. Computed tomography colonography allows for in vivo surveillance of colorectal polyps, providing volumetric growth rates that are providing new insights into tumorigenesis. In this article, existing cross-sectional and longitudinal data on colorectal polyps are reviewed, with an emphasis on how these features may affect clinical relevance and patient management.
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Affiliation(s)
| | | | | | - Cesare Hassan
- Digestive Endoscopy Unit, Nuovo Regina Margherita Hospital, Rome, Italy
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Can the Sum of Adenoma Diameters (Adenoma Bulk) on Index Examination Predict Risk of Metachronous Advanced Neoplasia? J Clin Gastroenterol 2018; 52:628-634. [PMID: 28767463 PMCID: PMC5794639 DOI: 10.1097/mcg.0000000000000899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Recent data suggest that adenoma size and number are more important predictors of metachronous colorectal neoplasia than advanced histology. Furthermore, there is poor reproducibility in diagnosing advanced histology; high-grade dysplasia and villous histology. Therefore we developed a new metric, adenoma bulk, the sum of diameters of all baseline adenomas, regardless of advanced features. GOAL Compare the predictive value for metachronous advanced neoplasia of adenoma bulk to conventional paradigm. STUDY Data were collected prospectively in a multicenter adenoma-chemoprevention trial (2004 to 2013). For the conventional paradigm, high-risk baseline findings were defined as ≥3 adenomas, large adenomas (≥1 cm) or adenomas with villous components or high-grade dysplasia. Adenoma bulk was examined across quartiles and as a continuous variable. Predictive characteristics (sensitivities, specificities, c-statistics) for metachronous advanced neoplasia using conventional criteria and adenoma bulk were calculated. receiver operator characteristic curves were computed using logistic regression. RESULTS In total, 1948 adults had index and follow-up colonoscopies (mean follow-up, 45.2 mo). Those with an adenoma bulk ≥10 mm (4th quartile) had a higher metachronous advanced neoplasia risk (14.4% vs. 6.9-8.2% in lower 3 quartiles; P=0.0002). The c-statistics and sensitivities (specificity fixed at 0.73) for the adenoma bulk and conventional models were 0.587 and 0.563 (P=0.17) and 0.396 and 0.390, respectively. CONCLUSIONS Categorizing sporadic adenoma patients as high versus low risk for metachronous advanced neoplasia by adenoma bulk of <versus ≥10 mm may be comparably predictive as conventional paradigm and simplifies risk stratification by obviating need for additional histology regarding extent of villous component or degree of dysplasia in resected polyps. The adenoma bulk metric and the 10 mm cutoff in particular would have to be validated in other populations before it can be used in clinical practice.
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CT Colonography Performance for the Detection of Polyps and Cancer in Adults ≥ 65 Years Old: Systematic Review and Meta-Analysis. AJR Am J Roentgenol 2018; 211:40-51. [DOI: 10.2214/ajr.18.19515] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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84
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Addressing Racial Disparity in Colorectal Cancer Screening With CT Colonography: Experience in an African-American Cohort. Clin Colorectal Cancer 2018; 17:e363-e367. [DOI: 10.1016/j.clcc.2018.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 02/09/2018] [Accepted: 02/14/2018] [Indexed: 01/09/2023]
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85
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von Renteln D, Kaltenbach T, Rastogi A, Anderson JC, Rösch T, Soetikno R, Pohl H. Simplifying Resect and Discard Strategies for Real-Time Assessment of Diminutive Colorectal Polyps. Clin Gastroenterol Hepatol 2018; 16:706-714. [PMID: 29174789 DOI: 10.1016/j.cgh.2017.11.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 10/30/2017] [Accepted: 11/05/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS During endoscopy, the resect and discard strategy, if performed with high confidence, can be used to determine histologic features of diminutive colorectal polyps (5 mm or less). These polyps can then be removed and discarded without pathology assessment. However, the complexities of real-time optical assessment and follow-up management have provided challenges to widespread use of this approach. We aimed to determine the outcomes of simple alternative strategies, in which all diminutive polyps can be resected and discarded. METHODS We collected data from 2 previous studies that used narrow-band imaging to assess polyps, performed at 5 medical centers (1658 patients with 2285 diminutive polyps; 15 endoscopists). We compared 3 resect and discard strategies: the currently used optical strategy, which relies on high confidence optical assessment of all diminutive polyps; a location-based strategy that classifies all recto-sigmoid diminutive polyps a priori as hyperplastic and all polyps proximal to the recto-sigmoid colon a priori as neoplastic; and a simplified optical strategy, in which all recto-sigmoid diminutive polyps are classified as hyperplastic unless confidently assessed as neoplastic, and all polyps proximal to the recto-sigmoid colon are classified as neoplastic unless confidently assessed as hyperplastic polyps. The primary outcome was the agreement of the surveillance interval calculated for each strategy with the surveillance interval determined by pathology analysis. RESULTS The proportion of surveillance intervals that agreed with pathology-based surveillance recommendations was slightly higher when the optical strategy was used compared to the location-based strategy or simplified optical strategy (94% vs 89% and 90%, respectively; P < .001). When the 5-10 year recommendations for patients with low-risk polyps were applied as a 10-year surveillance interval, all 3 strategies resulted in surveillance interval agreement compared to pathology above 90% (the quality benchmark). Use of the simplified or location-based strategy could have avoided pathology analysis for 77% of all polyps, compared to 59% if the optical strategy was used (P < .001). In addition, a higher proportion of patients could receive recommendations immediately after colonoscopy with use of the simplified or location based strategy (65%) compared to the optical strategy (40%) (P < .001). CONCLUSION A location-based and a simplified optical resect and discard strategy produced surveillance recommendations that were in agreement with those from pathology analysis for at least 90% of patients, assuming a 10-year surveillance interval for patients with low-risk polyps. These strategies could further reduce the number of pathology examinations and provide more patients with immediate surveillance recommendations. Optical assessment might be reduced or might not be required for resect and discard. Clintrials.gov no: NCT01935180 and NCT01288833.
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Affiliation(s)
- Daniel von Renteln
- Division of Gastroenterology, University of Montreal Medical Center (CHUM) and Research Center (CRCHUM), Montreal, QC, Canada.
| | - Tonya Kaltenbach
- San Francisco Veterans Affairs Medical Center, University of California, San Francisco, Division of Gastroenterology and Hepatology, San Francisco, California
| | - Amit Rastogi
- Veterans Affairs Kansas City, Gastroenterology Section and Department of Medicine, Division of Gastroenterology, University of Kansas, Kansas City, Missouri
| | - Joseph C Anderson
- Section of Gastroenterology, White River Junction VA Medical Center, White River Junction, Vermont, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
| | - Thomas Rösch
- Department of Interdisciplinary Endoscopy, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Roy Soetikno
- Veterans Affairs Palo Alto Health Care System and Stanford University School of Medicine, Palo Alto, California
| | - Heiko Pohl
- Section of Gastroenterology, White River Junction VA Medical Center, White River Junction, Vermont, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
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86
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Abstract
Standardized recommended techniques for performing and reporting CT colonography (CTC) examinations were developed by a consensus of experts. Published reporting guidelines, known as the CT colonography reporting and data system supplemented by recently updated comprehensive recommendations were incorporated into the American College of Radiology (ACR) practice guidelines. The application of continuous quality improvement to the practice of CT was aided by the development of an ACR national data registry (NRDR) for CTC that addressed both process and outcome quality measures. These measures can be used to benchmark an institution's CTC practice as compared to all participants. This article will discuss the best practices for reporting CTC and describe the use of NRDR to foster quality CTC performance.
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87
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Pickhardt PJ. CT colonography provides new insights into interval cancers. Lancet Gastroenterol Hepatol 2018; 3:292-294. [PMID: 29472115 DOI: 10.1016/s2468-1253(18)30042-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 01/31/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Perry J Pickhardt
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792-3252, USA.
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Byrne MF, Shahidi N, Rex DK. Will Computer-Aided Detection and Diagnosis Revolutionize Colonoscopy? Gastroenterology 2017; 153:1460-1464.e1. [PMID: 29100847 DOI: 10.1053/j.gastro.2017.10.026] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Michael F Byrne
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Neal Shahidi
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Douglas K Rex
- Indiana University Medical Center, Indianapolis, Indiana
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Hassan C, Ponchon T. Should ESGE implement optical diagnosis in Europe? Endosc Int Open 2017; 5:E1208-E1210. [PMID: 29202004 PMCID: PMC5699903 DOI: 10.1055/s-0043-118002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C. Hassan
- Endoscopy Unit, Nuovo Regina Margherita Hospital, Rome, Italy,Corresponding author Cesare Hassan, MD Nuovo Regina MargheritaVia Morosini 3000153 Roma, Italia+39065844-6533
| | - T. Ponchon
- Gastroenterology and Endoscopy, Edouard Herriot Hospital, Lyon, France
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Von Renteln D, Bouin M, Barkun AN. Current standards and new developments of colorectal polyp management and resection techniques. Expert Rev Gastroenterol Hepatol 2017; 11:835-842. [PMID: 28319429 DOI: 10.1080/17474124.2017.1309279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Colonoscopy and endoscopic removal of precancerous polyps play an important role in colorectal cancer (CRC) prevention. Improved endoscopes and quality standards have led to an increasing polyp and adenoma detection rate. Optimal polyp resection techniques and management strategies are key for an effective colonoscopy practice. Areas covered: Strategies for how to improve diminutive polyp (polyps up to 5 mm in size) management are discussed because of their high prevalence. Systematic removal of diminutive polyps leads to increasing costs of colonoscopy practice, while the effect on colorectal cancer prevention might be negligible. Furthermore, polypectomy recommendations for mid-size and large polyps are provided. For all larger polyps larger, complete and safe resection is mandatory to avoid post colonoscopy cancers. The focus for managing such larger polyps is to use new techniques (i.e. cold snares) and to attempt complete removal and to reduce post-polypectomy complications. Expert commentary: The resect-and-discard strategy is a promising management strategy for diminutive polyps. However, modification of this approach might be required in order to make widespread adoption feasible. Cold snare polypectomy is a promising new approach for small polyp resection. For resection of large polyps adequate treatment recommendations with regard to endoscopic mucosal resection and complication prevention are provided.
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Affiliation(s)
- Daniel Von Renteln
- a Department of Medicine, Division of Gastroenterology , Montreal University Hospital (CHUM) , Montreal , Canada
| | - Mickael Bouin
- a Department of Medicine, Division of Gastroenterology , Montreal University Hospital (CHUM) , Montreal , Canada
| | - Alan N Barkun
- b Division of Gastroenterology , McGill University Health Center, McGill University , Montreal , Quebec , Canada
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91
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Rex DK, Hassan C, Bourke MJ. The colonoscopist's guide to the vocabulary of colorectal neoplasia: histology, morphology, and management. Gastrointest Endosc 2017; 86:253-263. [PMID: 28396276 DOI: 10.1016/j.gie.2017.03.1546] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 03/29/2017] [Indexed: 02/07/2023]
Affiliation(s)
- Douglas K Rex
- Division of Gastroenterology/Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Cesare Hassan
- Digestive Endoscopy Unit, Catholic University, Rome, Italy
| | - Michael J Bourke
- Department of Gastroenterology and Hepatology, Westmead Hospital and University of Sydney, Sydney, New South Wales, Australia
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92
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Rex DK, Boland CR, Dominitz JA, Giardiello FM, Johnson DA, Kaltenbach T, Levin TR, Lieberman D, Robertson DJ. Colorectal Cancer Screening: Recommendations for Physicians and Patients From the U.S. Multi-Society Task Force on Colorectal Cancer. Gastroenterology 2017; 153:307-323. [PMID: 28600072 DOI: 10.1053/j.gastro.2017.05.013] [Citation(s) in RCA: 446] [Impact Index Per Article: 63.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This document updates the colorectal cancer (CRC) screening recommendations of the U.S. Multi-Society Task Force of Colorectal Cancer (MSTF), which represents the American College of Gastroenterology, the American Gastroenterological Association, and The American Society for Gastrointestinal Endoscopy. CRC screening tests are ranked in 3 tiers based on performance features, costs, and practical considerations. The first-tier tests are colonoscopy every 10 years and annual fecal immunochemical test (FIT). Colonoscopy and FIT are recommended as the cornerstones of screening regardless of how screening is offered. Thus, in a sequential approach based on colonoscopy offered first, FIT should be offered to patients who decline colonoscopy. Colonoscopy and FIT are recommended as tests of choice when multiple options are presented as alternatives. A risk-stratified approach is also appropriate, with FIT screening in populations with an estimated low prevalence of advanced neoplasia and colonoscopy screening in high prevalence populations. The second-tier tests include CT colonography every 5 years, the FIT-fecal DNA test every 3 years, and flexible sigmoidoscopy every 5 to 10 years. These tests are appropriate screening tests, but each has disadvantages relative to the tier 1 tests. Because of limited evidence and current obstacles to use, capsule colonoscopy every 5 years is a third-tier test. We suggest that the Septin9 serum assay (Epigenomics, Seattle, Wash) not be used for screening. Screening should begin at age 50 years in average-risk persons, except in African Americans in whom limited evidence supports screening at 45 years. CRC incidence is rising in persons under age 50, and thorough diagnostic evaluation of young persons with suspected colorectal bleeding is recommended. Discontinuation of screening should be considered when persons up to date with screening, who have prior negative screening (particularly colonoscopy), reach age 75 or have <10 years of life expectancy. Persons without prior screening should be considered for screening up to age 85, depending on age and comorbidities. Persons with a family history of CRC or a documented advanced adenoma in a first-degree relative age <60 years or 2 first-degree relatives with these findings at any age are recommended to undergo screening by colonoscopy every 5 years, beginning 10 years before the age at diagnosis of the youngest affected relative or age 40, whichever is earlier. Persons with a single first-degree relative diagnosed at ≥60 years with CRC or an advanced adenoma can be offered average-risk screening options beginning at age 40 years.
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Affiliation(s)
- Douglas K Rex
- Indiana University School of Medicine, Indianapolis, Indiana.
| | | | - Jason A Dominitz
- VA Puget Sound Health Care System, University of Washington, Seattle, Washington
| | | | | | - Tonya Kaltenbach
- San Francisco Veterans Affairs Medical Center, San Francisco, California
| | | | | | - Douglas J Robertson
- VA Medical Center, White River Junction, Vermont, and Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
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93
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Rex DK, Boland CR, Dominitz JA, Giardiello FM, Johnson DA, Kaltenbach T, Levin TR, Lieberman D, Robertson DJ. Colorectal Cancer Screening: Recommendations for Physicians and Patients from the U.S. Multi-Society Task Force on Colorectal Cancer. Am J Gastroenterol 2017; 112:1016-1030. [PMID: 28555630 DOI: 10.1038/ajg.2017.174] [Citation(s) in RCA: 423] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This document updates the colorectal cancer (CRC) screening recommendations of the U.S. Multi-Society Task Force of Colorectal Cancer (MSTF), which represents the American College of Gastroenterology, the American Gastroenterological Association, and The American Society for Gastrointestinal Endoscopy. CRC screening tests are ranked in 3 tiers based on performance features, costs, and practical considerations. The first-tier tests are colonoscopy every 10 years and annual fecal immunochemical test (FIT). Colonoscopy and FIT are recommended as the cornerstones of screening regardless of how screening is offered. Thus, in a sequential approach based on colonoscopy offered first, FIT should be offered to patients who decline colonoscopy. Colonoscopy and FIT are recommended as tests of choice when multiple options are presented as alternatives. A risk-stratified approach is also appropriate, with FIT screening in populations with an estimated low prevalence of advanced neoplasia and colonoscopy screening in high prevalence populations. The second-tier tests include CT colonography every 5 years, the FIT-fecal DNA test every 3 years, and flexible sigmoidoscopy every 5 to 10 years. These tests are appropriate screening tests, but each has disadvantages relative to the tier 1 tests. Because of limited evidence and current obstacles to use, capsule colonoscopy every 5 years is a third-tier test. We suggest that the Septin9 serum assay (Epigenomics, Seattle, Wash) not be used for screening. Screening should begin at age 50 years in average-risk persons, except in African Americans in whom limited evidence supports screening at 45 years. CRC incidence is rising in persons under age 50, and thorough diagnostic evaluation of young persons with suspected colorectal bleeding is recommended. Discontinuation of screening should be considered when persons up to date with screening, who have prior negative screening (particularly colonoscopy), reach age 75 or have <10 years of life expectancy. Persons without prior screening should be considered for screening up to age 85, depending on age and comorbidities. Persons with a family history of CRC or a documented advanced adenoma in a first-degree relative age <60 years or 2 first-degree relatives with these findings at any age are recommended to undergo screening by colonoscopy every 5 years, beginning 10 years before the age at diagnosis of the youngest affected relative or age 40, whichever is earlier. Persons with a single first-degree relative diagnosed at ≥60 years with CRC or an advanced adenoma can be offered average-risk screening options beginning at age 40 years.
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Affiliation(s)
- Douglas K Rex
- Indiana University School of Medicine, Indianapolis, Indiana, USA
| | | | - Jason A Dominitz
- VA Puget Sound Health Care System, University of Washington, Seattle, Washington, USA
| | | | | | - Tonya Kaltenbach
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
| | | | | | - Douglas J Robertson
- VA Medical Center, White River Junction, Vermont, and Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
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Rex DK, Boland CR, Dominitz JA, Giardiello FM, Johnson DA, Kaltenbach T, Levin TR, Lieberman D, Robertson DJ. Colorectal cancer screening: Recommendations for physicians and patients from the U.S. Multi-Society Task Force on Colorectal Cancer. Gastrointest Endosc 2017; 86:18-33. [PMID: 28600070 DOI: 10.1016/j.gie.2017.04.003] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 04/06/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Douglas K Rex
- Indiana University School of Medicine, Indianapolis, Indiana, USA.
| | | | - Jason A Dominitz
- VA Puget Sound Health Care System, University of Washington, Seattle, Washington, USA
| | | | | | - Tonya Kaltenbach
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
| | | | | | - Douglas J Robertson
- VA Medical Center, White River Junction, Vermont, and Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
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95
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von Renteln D, Pohl H. Polyp Resection - Controversial Practices and Unanswered Questions. Clin Transl Gastroenterol 2017; 8:e76. [PMID: 28277492 PMCID: PMC5387755 DOI: 10.1038/ctg.2017.6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/05/2017] [Indexed: 02/07/2023] Open
Abstract
Detection and complete removal of precancerous neoplastic polyps are central to effective colorectal cancer screening. The prevalence of neoplastic polyps in the screening population in the United States is likely >50%. However, most persons with neoplastic polyps are never destined to develop cancer, and do not benefit for finding and removing polyps, and may only be harmed by the procedure. Further 70-80% of polyps are diminutive (≤5 mm) and such polyps almost never contain cancer. Given the questionable benefit, the high-cost and the potential risk changing our approach to the management of diminutive polyps is currently debated. Deemphasizing diminutive polyps and shifting our efforts to detection and complete removal of larger and higher-risk polyps deserves discussion and study. This article explores three controversies, and emerging concepts related to endoscopic polyp resection. First, we discuss challenges of optical resect-and-discard strategy and possible alternatives. Second, we review recent studies that support the use of cold snare resection for ≥5 mm polyps. Thirdly, we examine current evidence for prophylactic clipping after resection of large polyps.
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Affiliation(s)
- Daniel von Renteln
- Department of Medicine, Division of Gastroenterology, Montreal University Hospital (CHUM), and Montreal University Hospital Research Center (CR-CHUM), Montréal, Quebec, Canada
| | - Heiko Pohl
- Department of Veterans Affairs Medical Center, White River Junction, Vermont, and Geisel School of Medicine and The Dartmouth Institute, Hanover, New Hampshire, USA
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Affiliation(s)
- Helmut Neumann
- Department of Medicine I, University Hospital Erlangen, Germany.
| | - Cesare Hassan
- Endoscopy Unit, Nuovo Regina Margherita Hospital, Rome, Italy
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