A retroperitoneal gastric duplication cyst mimicking a simple exophytic renal cyst in an adolescentGastric duplications are rare anomalies and usually occur along the greater curvature of the stomach. The authors herein describe an uncommon case of a retroperitoneal gastric duplication, which was not found during previous emergency laparotomy for suspected peritonitis at another institution. On subsequent computed tomography scan, the lesion was misinterpreted as a simple exophytic renal cyst. Laparoscopy was undertaken because of unresolved symptoms, and a retroperitoneal duplication cyst was successfully excised.
Omental pseudocyst formation associated with perforated gastric duplication: a case reportWe present a case of omental pseudocyst associated with a perforated gastric duplication. A boy (2.5 years old) with an abdominal mass was admitted because thick-walled and thin-walled double cysts were identified on computed tomography and magnetic resonance imaging. At laparotomy, the double cysts were interconnected and located in the omentum with no communication to the stomach. Microscopic examination showed a thick-walled cyst composed solely of gastric tissue with muscle layers divided at the stricture between the 2 cysts and a thin-walled cyst without a true endothelial lining.