Japan Gastroenterological Endoscopy Society Research Articles

The 100th Congress of Japan Gastroenterological Endoscopy Society

The 100th Congress of Japan Gastroenterological Endoscopy Society

Endoscopic Kyoto classification of Helicobacter pylori infection and gastric cancer risk diagnosis

Recent advances in endoscopic technology allow detailed observation of the gastric mucosa. Today, endoscopy is used in the diagnosis of gastritis to determine the presence/absence of Helicobacter pylori (H. pylori) infection and evaluate gastric cancer risk. In 2013, the Japan Gastroenterological Endoscopy Society advocated the Kyoto classification, a new grading system for endoscopic gastritis. The Kyoto classification organized endoscopic findings related to H. pylori infection. The Kyoto classification score is the sum of scores for five endoscopic findings (atrophy, intestinal metaplasia, enlarged folds, nodularity, and diffuse redness with or without regular arrangement of collecting venules) and ranges from 0 to 8. Atrophy, intestinal metaplasia, enlarged folds, and nodularity contribute to gastric cancer risk. Diffuse redness and regular arrangement of collecting venules are related to H. pylori infection status. In subjects without a history of H. pylori eradication, the infection rates in those with Kyoto scores of 0, 1, and ≥ 2 were 1.5%, 45%, and 82%, respectively. A Kyoto classification score of 0 indicates no H. pylori infection. A Kyoto classification score of 2 or more indicates H. pylori infection. Kyoto classification scores of patients with and without gastric cancer were 4.8 and 3.8, respectively. A Kyoto classification score of 4 or more might indicate gastric cancer risk.

Congratulatory Note to the 100th Congress of Japan Gastroenterological Endoscopy Society

Congratulatory Note to the 100th Congress of Japan Gastroenterological Endoscopy Society

Japan Gastroenterological Endoscopy Society guidelines for colorectal endoscopic submucosal dissection/endoscopic mucosal resection.

Suitable lesions for endoscopic treatment include not only early colorectal carcinomas but also several types of precarcinomatous adenomas. It is important to establish practical guidelines wherein preoperative diagnosis of colorectal neoplasia and selection of endoscopic treatment procedures are appropriately outlined and to ensure that actual endoscopic treatment is useful and safe in general hospitals when carried out in accordance with guidelines. In cooperation with the Japanese Society for Cancer of the Colon and Rectum, the Japanese Society of Coloproctology, and the Japanese Society of Gastroenterology, the Japan Gastroenterological Endoscopy Society compiled colorectal endoscopic submucosal dissection/endoscopic mucosal resection guidelines by using evidence-based methods in 2014. The first edition of these guidelines was published 5years ago. Accordingly, we have published the second edition of these guidelines based on recent new knowledge and evidence.

The 99th Congress of the Japan Gastroenterological Endoscopy Society

The 99th Congress of the Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society.

Digestive EndoscopyVolume 31, Issue 6 p. 725-751 Abstract The 98th Congress of Japan Gastroenterological Endoscopy Society First published: 05 November 2019 https://doi.org/10.1111/den.13561Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume31, Issue6November 2019Pages 725-751 RelatedInformation

The 99th Congress of the Japan Gastroenterological Endoscopy Society

The 99th Congress of the Japan Gastroenterological Endoscopy Society

The safety of upper gastrointestinal endoscopic biopsy in patients receiving antithrombic drugs. A single-centre prospective observational study.

IntroductionIn July 2012, the Japan Gastroenterological Endoscopy Society updated their guidelines on gastroenterological endoscopy in patients undergoing antithrombotic therapy, although the safety of endoscopic procedures in patients receiving antithrombotic drugs has yet to be sufficiently studied.AimThis study evaluates the safety of upper gastroenterological endoscopic biopsy in patients receiving antithrombotic drugs. We evaluated the prospective observational safety of endoscopic biopsy performed in the endoscopy unit of our patients using antithrombotic drugs.Material and methodsOesophagogastroduodenoscopies (OGD) and biopsies performed at a single endoscopy unit between July 2018 and February 2019 were examined in this prospective observational study. Patients receiving antithrombotic drugs due to cardiovascular and neurological reasons, who underwent an endoscopic mucosal biopsy for diagnostic purposes, were included in the study.ResultsThe study was completed with 166 patients who underwent an endoscopic biopsy, from whom a total of 327 biopsies taken. The patients were examined in two groups: those “receiving antithrombotic drugs” and those who had “stopped taking antithrombotic drugs”. There was no statistically significant difference between the two groups with respect to bleeding.ConclusionsThis prospective observational study showed that performing an endoscopic biopsy without the cessation of antithrombotic drugs does not increase bleeding risk. Low-risk procedures, such as endoscopic mucosal biopsies, can be performed confidently by experienced endoscopists.

Guidelines for standardizing cleansing and disinfection of gastrointestinal endoscopes.

As part of the activities toward standardizing endoscopy procedures, the Japan Gastroenterological Endoscopy Society has prepared guidelines for cleansing and disinfection of gastrointestinal endoscopes. The environment of gastrointestinal endoscopy differs between Japan and advanced Western countries. In advanced Western countries, gastrointestinal endoscopy is performed almost exclusively at specialized facilities, where strict provisions are observed for cleansing and disinfecting endoscopes. In Japan, however, gastrointestinal endoscopy is performed even in small clinics, and the annual number of gastrointestinal endoscopy cases is enormous. In addition, the method for cleansing and disinfecting endoscopes differs among hospitals. Although there is a distinct lack of evidence for how gastrointestinal endoscopes are cleaned and disinfected, it is necessary to standardize the method for doing so to advance the field of endoscopic medicine.

Report from the 97th Congress of Japan Gastroenterological Endoscopy Society (JGES).

Report from the 97th Congress of Japan Gastroenterological Endoscopy Society (JGES).

Anesthesia for peroral endoscopic myotomy in Japan.

Peroral endoscopic myotomy (POEM) was developed in Japan as a less invasive treatment for esophageal achalasia requiring general anesthesia under positive pressure ventilation. In 2018, the Japan Gastroenterological Endoscopy Society published the first guidelines describing the standard care for POEM. Based on these guidelines, we discuss the typical approach to anesthesia during POEM for the management of esophageal achalasia in Japan. Prior cleansing of the esophagus is essential to prevent both aspiration during induction of anesthesia and contamination of the mediastinum and thoracic/abdominal cavity by esophageal remnants after endoscopic resection of the esophageal mucosa. Although rare, adverse events related to intraoperative carbon dioxide insufflation occur. These are treated through percutaneous needle decompression and insertion of a chest drainage tube for pneumoperitoneum and pneumothorax, respectively. Caution should be exercised regarding the development of subcutaneous emphysema and its involvement in airway obstruction. Prevention of aspiration pneumonia and adverse events related to the insufflation of carbon dioxide is essential in the management of esophageal achalasia through POEM. Close cooperation between gastrointestinal endoscopic surgeons and anesthesiologists is indispensable in POEM.

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 99th Congress of the Japan Gastroenterological Endoscopy Society

The 99th Congress of the Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 97th Congress of the Japan Gastroenterological Endoscopy Society

Digestive EndoscopyVolume 31, Issue 3 p. 338-346 Abstract The 97th Congress of the Japan Gastroenterological Endoscopy Society First published: 08 May 2019 https://doi.org/10.1111/den.13422Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume31, Issue3May 2019Pages 338-346 RelatedInformation

The 97th Congress of the Japan Gastroenterological Endoscopy Society

The 97th Congress of the Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 97th Congress of the Japan Gastroenterological Endoscopy Society

The 97th Congress of the Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

The 98th Congress of Japan Gastroenterological Endoscopy Society

Japan Gastroenterological Endoscopy Society (JGES) clinical guidelines for endoscopic papillary large balloon dilation

Japan Gastroenterological Endoscopy Society (JGES) clinical guidelines for endoscopic papillary large balloon dilation