%0 Journal Article %T Gastric Duplication Cyst Presenting as Massive Gastrointestinal Bleeding %A Ala I. Sharara %A Alexander Ibrahim %A Alexey Youssef %A Ammar Omran %A Zuheir AlShehabi %J Archive of "Pediatric Gastroenterology, Hepatology & Nutrition". %D 2019 %R 10.5223/pghn.2019.22.2.189 %X Gastric duplication cysts (GDCs) are rare congenital anomalies. Presentation of GDCs varies from an asymptomatic abdominal mass to fulminant or massive gastrointestinal (GI) bleeding. Herein, we describe a case of a GDC in a 10-month-old infant presenting with unexplained massive GI hemorrhage and hematemesis. An abdominal ultrasound was negative, while computerized tomography was, initially, inaccessible. Through a series of repeated esophagogastroduodenoscopies, we documented penetration of the GDC into the gastric cavity that was later confirmed by computerized tomography. The patient was treated successfully with surgical resection %K Cyst %K Gastrointestinal hemorrhage %K Endoscopy %K Ulcer %K Congenital abnormalities %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416390/