{"title":"Novel biopsy method using an endoscopic tapered sheath for cystic gastric subepithelial lesions.","authors":"Yoshitaka Ando, Toshiyuki Sakurai, Masayuki Saruta","doi":"10.1111/den.15038","DOIUrl":"10.1111/den.15038","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":" ","pages":"891-892"},"PeriodicalIF":4.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144047553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-01Epub Date: 2025-04-22DOI: 10.1111/den.15041
Koh Kitagawa, Yui Osaki, Hitoshi Yoshiji
{"title":"Accidental portal vein cannulation by the use of an uneven double-lumen cannula during double-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography with video.","authors":"Koh Kitagawa, Yui Osaki, Hitoshi Yoshiji","doi":"10.1111/den.15041","DOIUrl":"10.1111/den.15041","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":" ","pages":"888-890"},"PeriodicalIF":4.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144008836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-01Epub Date: 2025-04-03DOI: 10.1111/den.15029
Tsunetaka Kato, Takuto Hikichi, Takumi Yanagita
{"title":"Gel-immersion-assisted endoscopic injection sclerotherapy under observation with Texture and Color enhancement imaging for esophageal varices.","authors":"Tsunetaka Kato, Takuto Hikichi, Takumi Yanagita","doi":"10.1111/den.15029","DOIUrl":"10.1111/den.15029","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":" ","pages":"895-897"},"PeriodicalIF":4.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuki Takashina, S. Kudo, Y. Kouyama, K. Ichimasa, H. Miyachi, Y. Mori, T. Kudo, Y. Maeda, Y. Ogawa, Takemasa Hayashi, K. Wakamura, Enami Yuta, N. Sawada, T. Baba, T. Nemoto, F. Ishida, M. Misawa
BACKGROUND AND AIMS Lymph node metastasis (LNM) prediction for T1 colorectal cancer (CRC) is critical for determining the need for surgery after endoscopic resection because LNM occurs in 10%. We aimed to develop a novel artificial intelligence (AI) system using whole slide images (WSIs) to predict LNM. METHODS We conducted a retrospective single center study. To train and test the AI model, we included LNM status-confirmed T1 and T2 CRC between April 2001 and October 2021. These lesions were divided into two cohorts: training (T1 and T2) and testing (T1). WSIs were cropped into small patches and clustered by unsupervised K-means. The percentage of patches belonging to each cluster was calculated from each WSI. Each cluster's percentage, sex, and tumor location were extracted and learned using the random forest algorithm. We calculated the areas under the receiver operator characteristics curves (AUCs) to identify the LNM and the rate of over-surgery of the AI model and the guidelines. RESULTS The training cohort contained 217 T1 and 268 T2 CRCs, while 100 T1 cases (LNM-positivity 15%) were the test cohort. The AUC of the AI system for the test cohort was 0.74 (95% confidence interval [CI], 0.58-0.86), and 0.52 (95% CI, 0.50-0.55) using the guidelines criteria (p=0.0028). This AI model could reduce the 21% of over-surgery compared to the guidelines. CONCLUSION We developed a pathologist-independent predictive model for LNM in T1 CRC using WSI for determination of the need for surgery after endoscopic resection.
{"title":"Whole slide images-based prediction of lymph node metastasis in T1 colorectal cancer using unsupervised artificial intelligence.","authors":"Yuki Takashina, S. Kudo, Y. Kouyama, K. Ichimasa, H. Miyachi, Y. Mori, T. Kudo, Y. Maeda, Y. Ogawa, Takemasa Hayashi, K. Wakamura, Enami Yuta, N. Sawada, T. Baba, T. Nemoto, F. Ishida, M. Misawa","doi":"10.2139/ssrn.4185475","DOIUrl":"https://doi.org/10.2139/ssrn.4185475","url":null,"abstract":"BACKGROUND AND AIMS\u0000Lymph node metastasis (LNM) prediction for T1 colorectal cancer (CRC) is critical for determining the need for surgery after endoscopic resection because LNM occurs in 10%. We aimed to develop a novel artificial intelligence (AI) system using whole slide images (WSIs) to predict LNM.\u0000\u0000\u0000METHODS\u0000We conducted a retrospective single center study. To train and test the AI model, we included LNM status-confirmed T1 and T2 CRC between April 2001 and October 2021. These lesions were divided into two cohorts: training (T1 and T2) and testing (T1). WSIs were cropped into small patches and clustered by unsupervised K-means. The percentage of patches belonging to each cluster was calculated from each WSI. Each cluster's percentage, sex, and tumor location were extracted and learned using the random forest algorithm. We calculated the areas under the receiver operator characteristics curves (AUCs) to identify the LNM and the rate of over-surgery of the AI model and the guidelines.\u0000\u0000\u0000RESULTS\u0000The training cohort contained 217 T1 and 268 T2 CRCs, while 100 T1 cases (LNM-positivity 15%) were the test cohort. The AUC of the AI system for the test cohort was 0.74 (95% confidence interval [CI], 0.58-0.86), and 0.52 (95% CI, 0.50-0.55) using the guidelines criteria (p=0.0028). This AI model could reduce the 21% of over-surgery compared to the guidelines.\u0000\u0000\u0000CONCLUSION\u0000We developed a pathologist-independent predictive model for LNM in T1 CRC using WSI for determination of the need for surgery after endoscopic resection.","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90837064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Esophagitis Dissecans Superficialis in a 49- year-old woman.","authors":"Noam Harpaz, Suparna A Sarkar","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":"28 2","pages":"238-9"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34667013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Esophageal stromal tumor.","authors":"Joseph Sung","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":"24 1","pages":"66"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39967855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Brainteaser. Eosinophilic esophagitis.","authors":"Bjorn Rembacken","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":"24 1","pages":"66-7"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39967892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Proceedings of the Endoscopy Forum, Japan 2007-2008.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":72813,"journal":{"name":"Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society","volume":"21 Suppl 1 ","pages":"S1-120"},"PeriodicalIF":0.0,"publicationDate":"2009-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28625069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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