{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T17:06:19Z","timestamp":1792515979134,"version":"4.5.0"},"reference-count":11,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2018,5,23]]},"abstract":"<jats:p>Alimentary tract duplications are a rare congenital malformation. They can present with varied symptoms owing to the locality of the duplication, along the gastrointestinal tract. Out of these duplications, the ones along the pylorus are the most rare. These are usually only diagnosed intraoperatively, as it is not a common differential on imaging due to its rarity. In lieu of the literature currently available, pyloric duplication cyst can present anytime from 1\u2009week of age to 5 years, with some cases being detected antenatally due to the prevalence of regular antenatal scanning. Surgery remains the main stay of treatment with the goal of complete excision of the cyst and complete removal of the cyst mucosal lining. We report the case of a 5-year-old girl, which to our knowledge is the first ever reported case from Karachi, Pakistan.<\/jats:p>","DOI":"10.1136\/bcr-2017-223384","type":"journal-article","created":{"date-parts":[[2018,6,8]],"date-time":"2018-06-08T03:45:14Z","timestamp":1528429514000},"page":"bcr-2017-223384","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Duplication cyst of the pylorus: a rare cause of gastric outlet obstruction"],"prefix":"10.1136","volume":"2018","author":[{"given":"Muhammad","family":"Arshad","sequence":"first","affiliation":[{"name":"Department of Pediatric Surgery, Aga Khan University, Karachi, Pakistan"},{"name":"Department of Pediatric Surgery, Liaquat National Hospital and Medical College, Karachi, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah Masroor","family":"Jeelani","sequence":"additional","affiliation":[{"name":"Post Graduate Medical Education, Aga Khan University, Karachi, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asma","family":"Siddiqui","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, Liaquat National Hospital and Medical College, Karachi, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rana","family":"Rehan","sequence":"additional","affiliation":[{"name":"Department of Radiology, Liaquat National Hospital and Medical College, Karachi, Sindh, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2018,6,8]]},"reference":[{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.1","first-page":"00065","article-title":"Pyloric duplication: about two cases","volume":"2","author":"Ahmed","year":"2015","journal-title":"J PediatrNeonatal Care"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.2","doi-asserted-by":"publisher","DOI":"10.1016\/jpsu.2003.50197"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.3","doi-asserted-by":"crossref","first-page":"322","DOI":"10.1007\/s12262-012-0697-z","article-title":"Duplication cyst of pyloric canal: a rare cause of pediatric gastric outlet obstruction: rare case report","volume":"75","author":"Sharma","year":"2013","journal-title":"Indian J Surg"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.4","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1186\/1752-1947-7-175","article-title":"Duplication cyst of the pylorus: a case report","volume":"7","author":"Trainavicius","year":"2013","journal-title":"J Med Case Rep"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.5","doi-asserted-by":"crossref","unstructured":"Lund DP . Alimentary tract duplications in Pediatric Surgery by Arnold G\u00a0Coran. 7th edn. Chap, 2012:1130\u20131.","DOI":"10.1016\/B978-0-323-07255-7.00090-8"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.6","first-page":"983","article-title":"Antenatally diagnosed congenital pyloric duplication associated with intraluminal pyloric cyst--rare entity case report and review of the literature","volume":"55","author":"M\u0103rginean","year":"2014","journal-title":"Rom J Morphol Embryol"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.7","doi-asserted-by":"crossref","first-page":"863","DOI":"10.7863\/jum.1994.13.11.863","article-title":"Ultrasonographic features of gastrointestinal duplications","volume":"13","author":"Segal","year":"1994","journal-title":"J Ultrasound Med"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.8","doi-asserted-by":"crossref","first-page":"1442","DOI":"10.1016\/j.jpedsurg.2011.02.045","article-title":"Pyloric duplication with communication to the pancreas in a neonate simulating hypertrophic pyloric stenosis","volume":"46","author":"Chin","year":"2011","journal-title":"J Pediatr Surg"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.9","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1186\/1477-7819-11-33","article-title":"Foregut duplication of the stomach diagnosed by endoscopic ultrasound guided fine-needle aspiration cytology: case report and literature review","volume":"11","author":"Napolitano","year":"2013","journal-title":"World J Surg Oncol"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.10","doi-asserted-by":"crossref","first-page":"152","DOI":"10.4103\/2303-9027.138783","article-title":"Duplication cysts: Diagnosis, management, and the role of endoscopic ultrasound","volume":"3","author":"Liu","year":"2014","journal-title":"Endosc Ultrasound"},{"key":"2025082707165958000_2018.jun06_2.bcr-2017-223384.11","unstructured":"Lister J . Duplications of the alimentary tract. In: Lister J , Irwing IM , eds. Neonatal surgery. 3rd edn.. London: Butterworths, 1990:474\u201384."}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2017-223384","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T14:17:08Z","timestamp":1756304228000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2017-223384"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,6,8]]},"references-count":11,"alternative-id":["10.1136\/bcr-2017-223384"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2017-223384","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,6,8]]}}}