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This study evaluated the usefulness and safety of performing preoperative TCS and ER after SEMS placement. From April 2016 to March 2022, 100 patients received SEMS, with 86 undergoing preoperative TCS, assessing complications and lesion characteristics.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/importance-of-preoperative-total-colonoscopy-and-endoscopic-resection-after-self-expandable-metallic-stent-placement/377025/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/importance-of-preoperative-total-colonoscopy-and-endoscopic-resection-after-self-expandable-metallic-stent-placement/377025.png","ImageObject",300,407,{"name":92,"@type":93},"Riley West","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-24",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of preoperative total colonoscopy after SEMS placement?","Question",{"text":112,"@type":113},"It allows assessment of whether synchronous proximal colon cancers are present or absent after SEMS placement in obstructive colorectal cancer patients.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What additional treatment can be done during preoperative endoscopic resection?",{"text":117,"@type":113},"Preoperative ER can treat neoplastic lesions proximal to the primary site using techniques such as cold snare polypectomy, endoscopic mucosal resection, or endoscopic submucosal dissection.",{"name":119,"@type":110,"acceptedAnswer":120},"Were there procedure-related complications from preoperative TCS and ER after SEMS placement?",{"text":121,"@type":113},"No procedure-related complications were observed, including stent migration, bleeding, or perforation.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},377025,1790707730,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},1099523885074,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Itonaga et al. BMCGastroenterology (2023) 23:251  \n[https://doi.org/10.1186/s12876-023-02888-z](https://doi.org/10.1186/s12876-023-02888-z)  \nBMC Gastroenterology  \nRESEARCH Open Access  \nImportance of preoperative total colonoscopy   \nand endoscopic resection after selfexpandable metallic stent placement for obstructive colorectal cancer as a bridgeto-surgery  \nShuichi Itonaga 1, Shohei Hamada 1, Eikichi Ihara2, Hitoshi Honma 1, Hiroki Fukuya 1, Akito Ookubo1, Taisuke Sasaki1, Daisuke Yoshimura1, Makoto Nakamuta1, Yorinobu Sumida3 and Naohiko Harada1*  \nAbstract  \nBackground and aim Colonic self-expandable metallic stent (SEMS) placement enables preoperative total colonoscopy (TCS) in patients with obstructive colorectal cancer. Following SEMS placement, it is possible to assess the presence or absence of synchronous proximal colon cancers and perform preoperative endoscopic resection (ER) for neoplastic lesions proximal to the primary lesion. The objective of this study was to determine the usefulness and safety of preoperative TCS and ER after SEMS placement in patients with obstructive colorectal cancer.  \nMethods From April 2016 to March 2022, we enrolled 100 patients with obstructive colorectal cancer who underwent SEMS placement, including 86 patients who underwent preoperative TCS after SEMS placement. Complications associated with preoperative TCS and ER after SEMS placement and the characteristics of the neoplastic lesions were assessed.  \nResults The success rate of SEMS placement as bridge-to-surgery was 98. 0%; six patients had associated complications. Preoperative TCS was performed 8 (range: 1–30) days after SEMS placement. Four patients had synchronous advanced cancers. Nine non-advanced synchronous cancers, 116 adenomas, and 18 sessile-serrated lesions were treated by preoperative TCS and ER after SEMS placement. No procedure-related complications, namely stent migration, bleeding, and perforation were observed. Forty-five patients underwent follow-up TCS 1 year after surgery. Only one patient with submucosal invasive cancer required a second surgery.  \nConclusions Preoperative TCS and ER after SEMS placement was performed with no complications. This approach allows preoperative evaluation of the entire colon and the treatment of precancerous lesions. (240 words) Keywords Obstructive colorectal cancer, Bridge-to-surgery, Self-expandable metallic stent, Synchronous cancers, Endoscopic resection  \n*Correspondence:  \nNaohiko Harada [harada.naohiko.ea@mail.hosp.go.jp](harada.naohiko.ea@mail.hosp.go.jp)  \nFull list of author information is available at the end of the article  \n© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit [http://creativecommons.org/licenses/by/4.0/](http://creativecommons.org/licenses/by/4.0/. The)[. The](http://creativecommons.org/licenses/by/4.0/. The)[ ](http://creativecommons.org/licenses/by/4.0/. The)Creative Commons Public Domain Dedication waiver ([http://creativecommons.org/publicdomain/zero/1.0/](http://creativecommons.org/publicdomain/zero/1.0/)) applies to the data made available in this article, unless otherwise stated in a credit line to the data.  \nItonaga et al. BMC Gastroenterology (2023) 23:251  \nIntroduction  \nPl","cbCaiqRwgHTnyaZ0","https://ap.wps.com/l/cbCaiqRwgHTnyaZ0","pdf",764115,"English","# Abstract\n## Background and aim\n## Methods\n## Results\n## Conclusions\n# Introduction\n# Methods","[{\"question\":\"What is the purpose of preoperative total colonoscopy after SEMS placement?\",\"answer\":\"It allows assessment of whether synchronous proximal colon cancers are present or absent after SEMS placement in obstructive colorectal cancer patients.\"},{\"question\":\"What additional treatment can be done during preoperative endoscopic resection?\",\"answer\":\"Preoperative ER can treat neoplastic lesions proximal to the primary site using techniques such as cold snare polypectomy, endoscopic mucosal resection, or endoscopic submucosal dissection.\"},{\"question\":\"Were there procedure-related complications from preoperative TCS and ER after SEMS placement?\",\"answer\":\"No procedure-related complications were observed, including stent migration, bleeding, or perforation.\"}]","Importance of Preoperative Total Colonoscopy and Endoscopic Resection After Self-Expandable Metallic Stent Placement | PDF",1790222757,13]