{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T08:00:13Z","timestamp":1790668813764,"version":"4.1.0"},"reference-count":16,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Clin J Gastroenterol"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Anaplastic carcinoma of the pancreas (ACP) is a rare and aggressive malignancy. We report a case of spindle cell-type ACP arising from intraductal papillary mucinous carcinoma (IPMC) showing rapid intra-cystic growth. A 73 year-old man was incidentally found to have a pancreatic cyst, initially diagnosed as a simple cyst. After 18\u00a0months, a solid component appeared within the cyst and rapidly enlarged within one month. Distal pancreatectomy was performed. Histopathology revealed spindle cell-type anaplastic carcinoma arising from invasive IPMC. Despite aggressive histology, curative resection was achieved. The patient remains recurrence-free for 50\u00a0months. Rapid changes in pancreatic cysts warrant careful evaluation and timely surgical intervention.<\/jats:p>","DOI":"10.1007\/s12328-026-02457-3","type":"journal-article","created":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T07:49:11Z","timestamp":1790668151000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Rapid intracystic growth of spindle cell-type anaplastic carcinoma derived from intraductal papillary mucinous carcinoma"],"prefix":"10.1007","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2318-073X","authenticated-orcid":false,"given":"Reiko","family":"Yamada","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayako","family":"Okuda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shoma","family":"Sawai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minako","family":"Urata","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuaki","family":"Shimada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenji","family":"Nose","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toji","family":"Murbayashi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hayato","family":"Nakagawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,29]]},"reference":[{"issue":"9","key":"2457_CR1","doi-asserted-by":"publisher","first-page":"764","DOI":"10.1093\/jjco\/hyad062","volume":"53","author":"H Imaoka","year":"2023","unstructured":"Imaoka H, Ikeda M, Umemoto K, et al. 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