{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:04:21Z","timestamp":1787022261377,"version":"build-2736575974"},"reference-count":11,"publisher":"Korean Society of Clinical Oncology","issue":"3","funder":[{"DOI":"10.13039\/501100008130","name":"Pusan National University Hospital","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100008130","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.kjco.org"],"crossmark-restriction":true},"short-container-title":["Korean J Clin Oncol"],"abstract":"<jats:p>Inflammatory myofibroblastic tumors (IMTs) of the duodenum are exceptionally uncommon, and their epidemiologic and clinical characteristics remain poorly defined because of the limited number of reported cases. We previously reported a case of duodenal IMT in the Korean Journal of Gastroenterology in 2018, with follow-up data available only up to 12 months. IMTs typically behave in a benign manner, but they may occasionally demonstrate local invasiveness and recurrence; therefore, achieving complete surgical excision is crucial, followed by long-term surveillance. In the present manuscript, we provide a subsequent long-term follow-up report of the same patient, offering an extended 88-month postoperative course and additional radiologic and pathologic details not included in the earlier publication. This follow-up report highlights the long-term benign behavior of the tumor despite positive surgical margins and anaplastic lymphoma kinase (ALK)-negative immunohistochemistry, contributing meaningful information to the scarce literature on adult duodenal IMTs.<\/jats:p>","DOI":"10.14216\/kjco.25374","type":"journal-article","created":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T04:38:15Z","timestamp":1767155895000},"page":"159-163","update-policy":"https:\/\/doi.org\/10.14216\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Inflammatory myofibroblastic tumor on second portion of duodenum: a case report"],"prefix":"10.14216","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-7303-0835","authenticated-orcid":true,"given":"Myeong Hun","family":"Oh","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4132-7662","authenticated-orcid":true,"given":"Hyung Il","family":"Seo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3848-1781","authenticated-orcid":true,"given":"Kyung Un","family":"Choi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1731-0430","authenticated-orcid":true,"given":"Seung Baek","family":"Hong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4165-3054","authenticated-orcid":true,"given":"Young Mok","family":"Park","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7764-9516","authenticated-orcid":true,"given":"Byeong Gwan","family":"Noh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5004-6662","authenticated-orcid":true,"given":"Su Bin","family":"Song","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"5309","published-online":{"date-parts":[[2025,12,31]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1093\/ajcp\/94.5.538"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199508000-00001"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1002\/cncr.24684"},{"key":"ref4","first-page":"135","volume-title":"Epithelioid inflammatory myofibroblastic sarcoma: an aggressive intra-abdominal variant of inflammatory myofibroblastic tumor with nuclear membrane or perinuclear ALK","author":"Marin-Enriuez","year":"2011"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1158\/2159-8290.cd-14-0377"},{"key":"ref6","first-page":"2776","volume-title":"Recurrent involvement of 2p23 in inflammatory myofibroblastic tumors","author":"Griffin","year":"1999"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.4166\/kjg.2018.72.1.28"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1016\/j.asjsur.2013.09.015"},{"key":"ref9","first-page":"509","volume-title":"Inflammatory myofibroblastic tumor: comparison of clinicopathologic, histologic, and immunohistochemical features including ALK expression in atypical and aggressive cases","author":"Coffin","year":"2007"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1007\/s12672-025-02343-3"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1007\/s11864-023-01144-6"}],"container-title":["Korean Journal of Clinical Oncology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.kjco.org\/upload\/pdf\/kjco-25374.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T09:01:47Z","timestamp":1767690107000},"score":1,"resource":{"primary":{"URL":"http:\/\/kjco.org\/journal\/view.php?doi=10.14216\/kjco.25374"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,31]]},"references-count":11,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2025,12,1]]}},"URL":"https:\/\/doi.org\/10.14216\/kjco.25374","relation":{},"ISSN":["1738-8082","2288-4084"],"issn-type":[{"value":"1738-8082","type":"print"},{"value":"2288-4084","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,31]]},"assertion":[{"value":"2025-09-12","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-12-16","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-12-31","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}