{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T15:02:50Z","timestamp":1780412570225,"version":"3.54.1"},"reference-count":10,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T00:00:00Z","timestamp":1679875200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["DEN Open"],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A 68\u2010year\u2010old female patient was referred to our hospital with a 30\u2010mm polyp in the second portion of the duodenum found via esophagogastroduodenoscopy. The polyp had an irregular, lobular surface and a thick stalk. In addition, white dots were detected on the surface. Magnifying endoscopy with narrow\u2010band imaging showed a white material deep in the loop\u2010shaped microvessels on the white dots. Endoscopic ultrasonography showed a hypoechoic elevated lesion from the mucosal layer, and a feeding vessel traversing the stalk to supply the head of the polyp. Endoscopic biopsy did not provide a definitive diagnosis. Endoscopic resection was conducted for a definitive diagnosis and treatment. The resected specimen showed a branching bundle of smooth muscle fibers covered by hyperplastic mucosa, consistent with a hamartomatous polyp. The patient had no mucocutaneous pigmentation or familial history of the hamartomatous polyp. The polyp was finally diagnosed as a solitary Peutz\u2010Jeghers\u2010type polyp. No recurrence has been observed for seven years postoperatively.<\/jats:p>","DOI":"10.1002\/deo2.226","type":"journal-article","created":{"date-parts":[[2023,3,28]],"date-time":"2023-03-28T05:01:52Z","timestamp":1679979712000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Endoscopic resection for a solitary Peutz\u2010Jeghers type polyp in the duodenum: A case report with literature review"],"prefix":"10.1002","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5564-184X","authenticated-orcid":false,"given":"Yasuhiko","family":"Hamada","sequence":"first","affiliation":[{"name":"Department of Gastroenterology and Hepatology Mie University Hospital  Tsu Mie Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaki","family":"Katsurahara","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology and Hepatology Mie University Hospital  Tsu Mie 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