{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T03:16:08Z","timestamp":1780542968454,"version":"3.54.1"},"reference-count":7,"publisher":"S. Karger AG","issue":"1","license":[{"start":{"date-parts":[[2021,3,11]],"date-time":"2021-03-11T00:00:00Z","timestamp":1615420800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2021,3,11]],"date-time":"2021-03-11T00:00:00Z","timestamp":1615420800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Case Rep Gastroenterol"],"abstract":"<jats:p>Gastric mixed adenocarcinoma-neuroendocrine tumor (NET) is a rare composite tumor, and a limited number of studies have reported on it. A 77-year-old man was admitted to our hospital because of acute cholecystitis. He underwent a cholecystectomy. Esophagogastroduodenoscopy during his admission revealed a slightly elevated tumor, and biopsy demonstrated a well-differentiated tubular adenocarcinoma. The tumor was resected completely by endoscopic submucosal dissection. Histological findings showed that it measured 9 mm in diameter, was located within the mucosa, and consisted of well-differentiated tubular adenocarcinoma and a NET G1. The NET was covered with adenocarcinoma and both components exhibited histological continuity. The NET and a part of the adenocarcinoma component showed a positive reaction for chromogranin A and synaptophysin. Neither enterochromaffin-like cell hyperplasia nor endocrine cell micronest surrounded the tumor. The diagnosis was gastric mixed adenocarcinoma-NET. The histological continuity between the two components can be likened to the same histogenesis. <\/jats:p>","DOI":"10.1159\/000513802","type":"journal-article","created":{"date-parts":[[2021,3,23]],"date-time":"2021-03-23T16:29:48Z","timestamp":1616516988000},"page":"323-331","source":"Crossref","is-referenced-by-count":2,"title":["A Gastric Intramucosal Mixed Adenocarcinoma-Neuroendocrine Tumor"],"prefix":"10.1159","volume":"15","author":[{"given":"Yoshifumi","family":"Sano","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shoichi","family":"Saito","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroshi","family":"Kawachi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Tsutsumi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junko","family":"Fujisaki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2021,3,11]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19891001)64:7<1534::AID-CNCR2820640730>3.0.CO;2-H"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.2169\/internalmedicine.0842-18"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-198700111-00007"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1007\/s10120-011-0041-5"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0463.2005.apm_190.x"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1111\/j.1443-1661.2008.00788.x"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1007\/s10043-003-0211-8"}],"container-title":["Case Reports in Gastroenterology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/513802","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/513802","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T16:18:17Z","timestamp":1745425097000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000513802"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,11]]},"references-count":7,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2021,5,3]]}},"URL":"https:\/\/doi.org\/10.1159\/000513802","archive":["Portico"],"relation":{},"ISSN":["1662-0631"],"issn-type":[{"value":"1662-0631","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,3,11]]}}}