{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:06:05Z","timestamp":1753877165960,"version":"3.41.2"},"reference-count":8,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2019,7,11]],"date-time":"2019-07-11T00:00:00Z","timestamp":1562803200000},"content-version":"vor","delay-in-days":10,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,7,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Ectopic pancreas is defined as pancreatic tissues having no anatomic or vascular connections with the orthotopic pancreas. It is difficult for clinicians to diagnose this disease without performing a histopathological examination because it lacks specific clinical manifestations. This case report is of a 46-year-old woman who presented with epigastric pain. She had elevated serum levels of carcinoembryonic antigen (CEA) and carbohydrate antigen 72-4 (CA72-4). Abdominal contrast-enhanced computed tomography (CT) revealed a persistently enhanced mass in the proximal jejunum, which was confirmed as ectopic pancreas via histopathological examination. Her serum CEA and CA72-4 levels were restored to normal ranges after resecting the jejunal ectopic pancreas. This is the first reported case of ectopic pancreas causing an elevation in serum CEA and CA-724 levels; this report supports the metaplasia theory and suggests that jejunal masses should be cautiously diagnosed for avoiding unnecessary concerns among patients and their families.<\/jats:p>","DOI":"10.1093\/jscr\/rjz217","type":"journal-article","created":{"date-parts":[[2019,6,25]],"date-time":"2019-06-25T20:13:17Z","timestamp":1561493597000},"source":"Crossref","is-referenced-by-count":3,"title":["A unique case of ectopic pancreas presenting as jejunal malignance"],"prefix":"10.1093","volume":"2019","author":[{"given":"Peng","family":"Zhang","sequence":"first","affiliation":[{"name":"Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Sichuan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mojin","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Sichuan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lifen","family":"Bai","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Sichuan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wen","family":"Zhuang","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Sichuan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2019,7,11]]},"reference":[{"key":"2019071110155407800_rjz217C1","doi-asserted-by":"crossref","first-page":"833","DOI":"10.1097\/PAS.0000000000000850","article-title":"Heterotopic pancreas of the gastrointestinal tract and associated precursor and cancerous lesions: systematic pathologic studies of 165 cases","volume":"41","author":"Jun","year":"2017","journal-title":"Am J Surg 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