{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T12:56:35Z","timestamp":1792673795488,"version":"4.5.0"},"reference-count":29,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2022,11,18]],"date-time":"2022-11-18T00:00:00Z","timestamp":1668729600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Annals of Gastroent Surgery"],"published-print":{"date-parts":[[2023,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>This study aimed to investigate the effect of the coronavirus disease pandemic on the number of surgeries for gastroenterological cancer cases in Japan.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The data recorded in the National Clinical Database of Japan between 2018 and 2020 were utilized for this study. Five specific surgeries for primary cancers and surgery for acute diffuse peritonitis were considered the primary endpoints. We divided the study period into the prepandemic and postpandemic (after April 2020) periods and examined the number of surgeries in relation to clinical factors.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Overall, 228\u2009860 surgeries were analyzed. Among the five primary cancer surgeries, the number of distal gastrectomies for gastric cancer decreased the most (to 81.0% of the monthly number in the prepandemic period), followed by that of low anterior resections for rectal cancer (91.4%). In contrast, the number of pancreaticoduodenectomies for pancreatic cancer increased by 7.1%, while that of surgeries for peritonitis remained stable. This trend was observed nationwide. We also noted a marked reduction in the number of distal gastrectomy (to 72.5%), low anterior resection (84.0%), and esophagectomy (88.8%) procedures for T1 tumors. The noncurative resection rate and mortalities were low despite the increased proportion of T4 tumors and older patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A marked reduction in surgeries for gastric and rectal cancers with early T factors may reflect prioritization of surgeries and reduction in cancer screenings. Although the quality of the surgery was maintained in terms of reduced mortalities and morbidities, the long\u2010term effects of this pandemic should be monitored.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ags3.12638","type":"journal-article","created":{"date-parts":[[2022,11,18]],"date-time":"2022-11-18T12:51:54Z","timestamp":1668775914000},"page":"407-418","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Effects of the <scp>COVID<\/scp>\u201019 pandemic on gastroenterological surgeries in 2020: A study using the National Clinical Database of Japan"],"prefix":"10.1002","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7694-8082","authenticated-orcid":false,"given":"Hiromichi","family":"Maeda","sequence":"first","affiliation":[{"name":"Department of Surgery Kochi Medical School  Kochi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0052-0332","authenticated-orcid":false,"given":"Hideki","family":"Endo","sequence":"additional","affiliation":[{"name":"Department of Healthcare Quality Assessment, Graduate School of Medicine The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3337-7595","authenticated-orcid":false,"given":"Hiroyuki","family":"Yamamoto","sequence":"additional","affiliation":[{"name":"Department of Healthcare Quality Assessment, Graduate School of Medicine The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroaki","family":"Miyata","sequence":"additional","affiliation":[{"name":"Department of Healthcare Quality Assessment, Graduate School of Medicine The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaya","family":"Munekage","sequence":"additional","affiliation":[{"name":"Department of Surgery Kochi Medical School  Kochi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akinobu","family":"Taketomi","sequence":"additional","affiliation":[{"name":"Department of Gastroenterological Surgery I Hokkaido University Hospital  Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2727-0241","authenticated-orcid":false,"given":"Yoshihiro","family":"Kakeji","sequence":"additional","affiliation":[{"name":"Database Committee, The Japanese Society of Gastroenterological Surgery  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6953-8752","authenticated-orcid":false,"given":"Yasuyuki","family":"Seto","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal Surgery, Graduate School of Medicine The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1408-0104","authenticated-orcid":false,"given":"Kazuhiro","family":"Yoshida","sequence":"additional","affiliation":[{"name":"Department of Gastroenterological and Pediatric Surgery, Graduate School of Medicine Gifu University  Gifu Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6982-3457","authenticated-orcid":false,"given":"Hiroki","family":"Yamaue","sequence":"additional","affiliation":[{"name":"Second Department of Surgery, School of Medicine Wakayama Medical University  Wakayama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masakazu","family":"Yamamoto","sequence":"additional","affiliation":[{"name":"Utsunomiya Memorial Hospital  Tochigi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuko","family":"Kitagawa","sequence":"additional","affiliation":[{"name":"The Japanese Society of Gastroenterological Surgery, Tokyo, Japan &amp; Department of Surgery Keio University School of Medicine  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mori","family":"Masaki","sequence":"additional","affiliation":[{"name":"School of Medicine Tokai University  Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuhiro","family":"Hanazaki","sequence":"additional","affiliation":[{"name":"Kochi Medical School Hospital  Kochi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,11,18]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(20)30183-5"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/hsr2.657"},{"key":"e_1_2_7_4_1","unstructured":"World Health Organization [internet].Geneva: WHO Coronavirus (COVID\u201019) Dashboard [last access 20 Aug. 2022]. 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