{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T22:45:05Z","timestamp":1789685105347,"version":"4.0.1"},"reference-count":39,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2012,2,27]],"date-time":"2012-02-27T00:00:00Z","timestamp":1330300800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Resonance Imaging"],"published-print":{"date-parts":[[2012,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose:<\/jats:title><jats:p>To determine the characteristic magnetic resonance imaging (MRI) features of mass\u2010forming autoimmune pancreatitis (AIP), which allow its differentiation from pancreatic adenocarcinoma (PAC).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods:<\/jats:title><jats:p>MR images of 37 patients with either pathologically proven, mass\u2010forming AIPs (<jats:italic>n<\/jats:italic> = 9) or PACs (<jats:italic>n<\/jats:italic> = 28) were retrospectively reviewed. The pancreatic MR protocol included unenhanced images, contrast\u2010enhanced dynamic images, diffusion\u2010weighted imaging (DWI), and MR\u2010cholangiopancreatography (MRCP). Two reviewers analyzed the MR images regarding the number, location, morphologic features, and enhancement degree and pattern of the lesions as well as secondary changes of the pancreatic parenchyma, the biliary and pancreatic ducts. The size and apparent diffusion coefficient (ADC) values of the lesions were measured.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results:<\/jats:title><jats:p>Although sensitivities were low (28.6%\u201344.4%), specificities of multiplicity, capsule\u2010like rim enhancement, and skipped stricture of the biliary or pancreatic duct in mass\u2010forming AIP were high (100%). Sensitivities and specificities of irregular or geographic shape, delayed enhancement, and a low ADC value &lt;1.26 \u00d7 10<jats:sup>\u22123<\/jats:sup> mm<jats:sup>2<\/jats:sup>\/s in mass\u2010forming AIP were favorable (71.4%\u201383.3% and 78.5%\u201389.3%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion:<\/jats:title><jats:p>Although to differentiate mass\u2010forming AIP from pancreatic cancer is difficult, the combination of MRI findings including contrast\u2010enhanced dynamic images, MRCP, and DWI can be a help. J. Magn. Reson. Imaging 2012;36:188\u2013197. \u00a9 2012 Wiley Periodicals, Inc.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jmri.23609","type":"journal-article","created":{"date-parts":[[2012,2,27]],"date-time":"2012-02-27T19:34:24Z","timestamp":1330371264000},"page":"188-197","source":"Crossref","is-referenced-by-count":102,"title":["Magnetic resonance imaging findings of the mass\u2010forming type of autoimmune pancreatitis: Comparison with pancreatic adenocarcinoma"],"prefix":"10.1002","volume":"36","author":[{"given":"Bo Yun","family":"Hur","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeong Min","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeong Eun","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jae 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