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Endoscopic retrograde cholangiopancreaticography revealed an ampullary lesion. Pathology of the ampullary lesion revealed an inflammatory polyp. Endoscopic ultrasound with endoscopic mucosal resection of the lesion revealed an adenomyomatous hyperplasia. The patient recovered well postendoscopic resection without recurrent pancreatitis or cholestasis.<\/jats:p>","DOI":"10.1136\/bcr-2013-203151","type":"journal-article","created":{"date-parts":[[2014,3,6]],"date-time":"2014-03-06T12:24:34Z","timestamp":1394108674000},"page":"bcr2013203151","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":12,"title":["Adenomyomatous hyperplasia of the ampulla of Vater presenting as acute pancreatitis"],"prefix":"10.1136","volume":"2014","author":[{"family":"Rafiullah","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sabo","family":"Tanimu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2014,3,6]]},"reference":[{"key":"2025042702482472000_2014.mar06_1.bcr2013203151.1","unstructured":"Rosai J , ed. Ackerman's surgical pathology. 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