{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T11:50:19Z","timestamp":1776513019781,"version":"3.51.2"},"reference-count":12,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T00:00:00Z","timestamp":1619049600000},"content-version":"vor","delay-in-days":21,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Annular pancreas is defined by a ring of pancreatic tissue encircling the descending portion of the duodenum. It is exceptionally rare in adults and commonly diagnosed during the investigation of symptoms arising due to its complications. Treatment usually involves the surgical correction with a duodenoduodenostomy, gastrojejunostomy or duodenojejunostomy. We discuss the case of a 66-year-old male patient who presented with symptoms of gastric outlet obstruction and was found to have an annular pancreas encircling the pylorus and the first and second portions of the duodenum and was treated by performing a gastrojejunostomy. Upper gastrointestinal series, computerized tomography (CT) scans, and magnetic resonance cholangeopancreatographys can all be used for preoperative diagnosis; however, endoscopic retrograde cholangiopancreatography (ERCP) is the diagnostic modality of choice. Nonetheless, many patients may only be diagnosed intraoperatively, especially those who cannot undergo an ERCP due to stenosis proximal to the duodenum or patients in whom the annulus may not be visible on CT scan.<\/jats:p>","DOI":"10.1093\/jscr\/rjab125","type":"journal-article","created":{"date-parts":[[2021,3,13]],"date-time":"2021-03-13T20:09:34Z","timestamp":1615666174000},"source":"Crossref","is-referenced-by-count":2,"title":["Annular pancreas causing pyloric stenosis in a 66-year-old patient treated with gastrojejunostomy: a case report"],"prefix":"10.1093","volume":"2021","author":[{"given":"P","family":"Patel","sequence":"first","affiliation":[{"name":"St. George\u2019s University School of Medicine, Grenada, West Indies"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S","family":"Diko","sequence":"additional","affiliation":[{"name":"St. Joseph\u2019s University Medical Center, Paterson, NJ 07503, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S","family":"Kulkarni","sequence":"additional","affiliation":[{"name":"St. Joseph\u2019s University Medical Center, Paterson, NJ 07503, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C","family":"Persaud","sequence":"additional","affiliation":[{"name":"St. Joseph\u2019s University Medical Center, Paterson, NJ 07503, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F","family":"Sartorato","sequence":"additional","affiliation":[{"name":"St. Joseph\u2019s University Medical Center, Paterson, NJ 07503, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D","family":"Christian","sequence":"additional","affiliation":[{"name":"St. Joseph\u2019s University Medical Center, Paterson, NJ 07503, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2021,4,22]]},"reference":[{"key":"2021070811401981500_ref1","doi-asserted-by":"publisher","first-page":"321","DOI":"10.1007\/s00117-006-1340-4","article-title":"Teil I: Angeborene Ver\u00e4nderungen, akute und chronische Pankreatitis [Pancreas. Part I: congenital changes, acute and chronic pancreatitis]","volume":"46","author":"Schima","year":"2006","journal-title":"Radiologe"},{"key":"2021070811401981500_ref2","doi-asserted-by":"crossref","first-page":"1019","DOI":"10.1016\/j.jamcollsurg.2007.12.009","article-title":"Annular pancreas: dramatic differences between children and adults","volume":"206","author":"Zyromski","year":"2008","journal-title":"J Am Coll Surg"},{"key":"2021070811401981500_ref3","doi-asserted-by":"publisher","first-page":"211","DOI":"10.21037\/atm.2018.05.13","article-title":"Laparoscopic roux-en-Y duodenojejunostomy for annular pancreas in adults: case report and literature review","volume":"6","author":"Cai","year":"2018","journal-title":"Ann Transl Med"},{"key":"2021070811401981500_ref4","first-page":"307","article-title":"Pancreas anulare als seltene Differentialdiagnose der Duodenalstenose im Erwachsenenalter [pancreas anulare as a rare differential diagnosis of duodenal stenosis in adulthood]","volume":"382","author":"Hamm","year":"1997","journal-title":"Langenbecks Arch Chir"},{"key":"2021070811401981500_ref5","doi-asserted-by":"crossref","first-page":"121","DOI":"10.4103\/jmas.JMAS_245_18","article-title":"Laparoscopic roux-en Y duodenojejunostomy: a safe and physiological treatment for symptomatic annular pancreas in adults [published online ahead of print, 2019 Jan 4]","volume":"16","author":"Chittawadagi","year":"2019","journal-title":"J Minim Access Surg"},{"key":"2021070811401981500_ref6","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/j.ijscr.2016.02.001","article-title":"Symptomatic annular pancreas in adult: report of two different presentations and treatments and review of the literature","volume":"20S","author":"Rondelli","year":"2016","journal-title":"Int J Surg Case Rep"},{"key":"2021070811401981500_ref7","doi-asserted-by":"crossref","first-page":"404","DOI":"10.1177\/000313480306900509","article-title":"Annular pancreas in the adult: two case reports and review of more than a century of literature","volume":"69","author":"Maker","year":"2003","journal-title":"Am Surg"},{"key":"2021070811401981500_ref8","doi-asserted-by":"crossref","first-page":"437","DOI":"10.12659\/AJCR.891041","article-title":"Annular pancreas: a cause of gastric outlet obstruction in a 20-year-old patient","volume":"15","author":"Alahmadi","year":"2014","journal-title":"Am J Case Rep"},{"key":"2021070811401981500_ref9","doi-asserted-by":"crossref","first-page":"455","DOI":"10.2214\/AJR.08.1596","article-title":"Annular pancreas in adults","volume":"193","author":"Sandrasegaran","year":"2009","journal-title":"AJR Am J Roentgenol"},{"key":"2021070811401981500_ref10","doi-asserted-by":"crossref","first-page":"11","DOI":"10.3941\/jrcr.v12i10.3461","article-title":"Annular pancreas in an adult presenting with acute pancreatitis","volume":"12","author":"Huddleston","year":"2018","journal-title":"J Radiol Case Rep"},{"key":"2021070811401981500_ref11","first-page":"277","article-title":"Annular pancreas in adults: a report of two cases and review of literature","volume":"14","author":"Wani","year":"2013","journal-title":"JOP"},{"key":"2021070811401981500_ref12","doi-asserted-by":"crossref","first-page":"75","DOI":"10.5387\/fms.50.75","article-title":"A case of annular pancreas in a male adult","volume":"50","author":"Miyazawa","year":"2004","journal-title":"Fukushima J Med Sci"}],"container-title":["Journal of Surgical Case Reports"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/academic.oup.com\/jscr\/article-pdf\/2021\/4\/rjab125\/37274643\/rjab125.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/academic.oup.com\/jscr\/article-pdf\/2021\/4\/rjab125\/37274643\/rjab125.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T03:16:35Z","timestamp":1698030995000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/jscr\/article\/doi\/10.1093\/jscr\/rjab125\/6246276"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,1]]},"references-count":12,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2021,4,1]]}},"URL":"https:\/\/doi.org\/10.1093\/jscr\/rjab125","relation":{},"ISSN":["2042-8812"],"issn-type":[{"value":"2042-8812","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2021,4]]},"published":{"date-parts":[[2021,4,1]]},"article-number":"rjab125"}}