{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,27]],"date-time":"2026-06-27T03:52:39Z","timestamp":1782532359463,"version":"3.54.5"},"reference-count":20,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,4,20]],"date-time":"2021-04-20T00:00:00Z","timestamp":1618876800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003710","name":"Korea Health Industry Development Institute","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003710","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Hepato Biliary Pancreat"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Although we previously proposed a nomogram to predict malignancy in intraductal papillary mucinous neoplasms (IPMN) and validated it in an external cohort, its application is challenging without data on tumor markers. Moreover, existing nomograms have not been compared. This study aimed to develop a nomogram based on radiologic findings and to compare its performance with previously proposed American and Korean\/Japanese nomograms.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We recruited 3708 patients who underwent surgical resection at 31 tertiary institutions in eight countries, and patients with main pancreatic duct\u00a0&gt;10\u00a0mm were excluded. To construct the nomogram, 2606 patients were randomly allocated 1:1 into training and internal validation sets, and area under the receiver operating characteristics curve (AUC) was calculated using 10\u2010fold cross validation by exhaustive search. This nomogram was then validated and compared to the American and Korean\/Japanese nomograms using 1102 patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among the 2606 patients, 90 had main\u2010duct type, 900 had branch\u2010duct type, and 1616 had mixed\u2010type IPMN. Pathologic results revealed 1628 low\u2010grade dysplasia, 476 high\u2010grade dysplasia, and 502 invasive carcinoma. Location, cyst size, duct dilatation, and mural nodule were selected to construct the nomogram. AUC of this nomogram was higher than the American nomogram (0.691 vs 0.664, <jats:italic>P<\/jats:italic>\u00a0=\u00a0.014) and comparable with the Korean\/Japanese nomogram (0.659 vs 0.653, <jats:italic>P<\/jats:italic>\u00a0=\u00a0.255).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>A novel nomogram based on radiologic findings of IPMN is competitive for predicting risk of malignancy. This nomogram would be clinically helpful in circumstances where tumor markers are not available. The nomogram is freely available at <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"http:\/\/statgen.snu.ac.kr\/software\/nomogramIPMN\">http:\/\/statgen.snu.ac.kr\/software\/nomogramIPMN<\/jats:ext-link>.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jhbp.962","type":"journal-article","created":{"date-parts":[[2021,4,3]],"date-time":"2021-04-03T02:26:06Z","timestamp":1617416766000},"page":"133-143","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Development, validation, and comparison of a nomogram based on radiologic findings for predicting malignancy in intraductal papillary mucinous neoplasms of the pancreas: An international multicenter study"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4711-3603","authenticated-orcid":false,"given":"Hyeong Seok","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Surgery and Cancer Research 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Medicine  Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudio","family":"Bassi","sequence":"additional","affiliation":[{"name":"Department of General and Pancreatic Surgery The Pancreas Institute University of Verona Hospital Trust  Verona Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roberto","family":"Salvia","sequence":"additional","affiliation":[{"name":"Department of General and Pancreatic Surgery The Pancreas Institute University of Verona Hospital Trust  Verona Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanni","family":"Marchegiani","sequence":"additional","affiliation":[{"name":"Department of General and Pancreatic Surgery The Pancreas Institute University of Verona Hospital Trust  Verona Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher L.","family":"Wolfgang","sequence":"additional","affiliation":[{"name":"Department of Surgery Johns Hopkins 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