{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,6]],"date-time":"2025-08-06T12:40:14Z","timestamp":1754484014165,"version":"3.41.0"},"reference-count":30,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,1,13]],"date-time":"2025-01-13T00:00:00Z","timestamp":1736726400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Annals of Gastroent Surgery"],"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The optimal postoperative surveillance strategy after curative resection in patients with stage IV colorectal cancer remains unclear. The present study aimed to assess the cost\u2010effectiveness of postoperative surveillance strategies recommended by the various academic societies for stage IV colorectal cancer after curative resection.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This economic evaluation used a Markov state\u2010transition model to compare the cost\u2010effectiveness of postoperative surveillance programs proposed in guidelines published by the American Society of Clinical Oncology, American Society of Colon and Rectal Surgeons, European Society for Medical Oncology, National Comprehensive Cancer Network, and Japanese Society for Cancer of the Colon and Rectum. Model parameters were extracted from our retrospective data for patients with colorectal cancer who had synchronous liver and\/or lung metastases and underwent curative resection. Cost\u2010effectiveness was assessed using an incremental cost\u2010effectiveness ratio for quality\u2010adjusted life years, with a maximum acceptable value of 5\u2009000\u2009000\u20136\u2009000\u2009000 JPY\/33333\u201340\u2009000 USD. Uncertainty in the model was assessed by probabilistic sensitivity analyses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>For patients with stage IV colorectal cancer after curative resection, the JSCCR\u2010strategy was the most cost\u2010effective, with an incremental cost\u2010effectiveness ratio of 2\u2009888\u2009628 JPY\/19256 USD compared with the next most cost\u2010effective program. Probabilistic sensitivity analysis showed that the JSCCR\u2010strategy was most likely to be selected as the most cost\u2010effective (76.1%\u201377.9%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This modeling analysis found that the JSCCR\u2010strategy was the most cost\u2010effective strategy for stage IV colorectal cancer. Our findings suggest that intensive postoperative surveillance is acceptable for stage IV colorectal cancer.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ags3.12906","type":"journal-article","created":{"date-parts":[[2025,1,14]],"date-time":"2025-01-14T03:55:54Z","timestamp":1736826954000},"page":"730-738","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Cost\u2010effectiveness analysis of postoperative surveillance for stage <scp>IV<\/scp> colorectal cancer in Japan: An economic modeling study"],"prefix":"10.1002","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0752-8356","authenticated-orcid":false,"given":"Fumio","family":"Tsukamoto","sequence":"first","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Tokyo Japan"},{"name":"Department of Gastrointestinal Surgery, Graduate School of Medicine Institute of Science Tokyo  Tokyo 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