Case Report
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World J Gastroenterol. Dec 7, 2013; 19(45): 8445-8448
Published online Dec 7, 2013. doi: 10.3748/wjg.v19.i45.8445
Rare adult gastric duplication cyst mimicking a gastrointestinal stromal tumor
Morakod Deesomsak, Pitulak Aswakul, Pairoj Junyangdikul, Varayu Prachayakul
Morakod Deesomsak, Pitulak Aswakul, Liver and Digestive Institute, Samitivej Sukhumvit Hospital, Bangkok 10120, Thailand
Pairoj Junyangdikul, Department of Pathology, Samitivej Srinakarin Hospital, Bangkok 10250, Thailand
Varayu Prachayakul, Siriraj GI Endoscopy Center, Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
Author contributions: Prachayakul V conceptualized the study; Aswakul P, Deesomsak M and Junyangdikul P acquired the data; Prachayakul V and Aswakul P wrote the manuscript.
Correspondence to: Varayu Prachayakul, MD, Siriraj GI Endoscopy Center, Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand. kaiyjr@gmail.com
Telephone: +66-2-4121088 Fax: +66-2-4196101
Received: March 28, 2013
Revised: June 6, 2013
Accepted: June 18, 2013
Published online: December 7, 2013
Core Tip

Core tip: Gastric duplication cyst is a very rare gastrointestinal malformation and most of the cases are diagnosed within the first year of life following clinical investigations of abdominal symptoms including pain, vomiting, and palpable mass. Gastrointestinal hemorrhage is a rare clinical manifestation. Here, we report a 52-year-old man who presented with a one-month history of progressive iron deficiency anemia without overt gastrointestinal bleeding. Esophagogastroduodenoscopy revealed general gastrointestinal bleeding and a 2.0 cm subepithelial tumor originating from the third layer of gastric wall. After complete removal by endoscopic mucosal resection, histopathological findings indicated a diagnosis of gastric duplication cyst with erosion.