%A Sholadoye, Tunde %A Abdulkarim, Saidu %A Aliyu, Halima %A Ogunsua, Oluseyi %T Pyloroduodenal duplication cyst presenting like hypertrophic pyloric stenosis %9 Case Report %D 2020 %J Archives of International Surgery %R 10.4103/ais.ais_11_20 %P 63-65 %V 10 %N 2 %U https://www.archintsurg.org/article.asp?issn=2278-9596;year=2020;volume=10;issue=2;spage=63;epage=65;aulast=Sholadoye %8 April 1, 2020 %X Gastrointestinal duplication cyst is a rare congenital anomaly. When it involves the pylorus or the first part of the duodenum, it may present with features of gastric outlet obstruction. We present a 4-month-old baby girl, second of a set of twins who presented with features of gastric outlet obstruction. A diagnosis of gastric outlet obstruction querying hypertrophic pyloric stenosis was made and she was resuscitated. The intraoperative finding was that of a huge non-communicating duplication cyst involving the pylorus and the first part of the duodenum. Excision and mucosal stripping of the cyst was done. Histology showed ectopic gastric mucosa. Pyloroduodenal duplication cyst is a rare congenital anomaly of the gastrointestinal tract and a close differential for patients who present too early or too late with features of Hypertrophic pyloric stenosis. %0 Journal Article %I Wolters Kluwer Medknow Publications %@ 2278-9596