A Gastric Duplication Cyst Initially Mimicking Staghorn Calculus.

Gastric duplication cyst is an uncommon anomaly typically found in the greater curvature of the stomach. It is usually diagnosed in children and quite difficult to diagnose in adult because of variable presentation. We present a 76-year woman who was admitted for abdominal pain of few weeks' duration. Her X-ray showed calcification in the region of left kidney, and she was subsequently managed with a presumptive diagnosis of staghorn calculus. Computerized Tomography (CT) scan of her abdomen disclosed calcification in the gastric wall for which an endoscopic ultrasound and biopsy was done. Findings were consistent with the presence of gastric epithelium and a diagnosis of gastric duplication cyst was made. Surgery was the continuation of care. The presence of symptomatic gastric cyst in an elderly patient is very rare. This is the first case in which gastric duplication cyst mimicked staghorn calculus on abdominal X-ray. Consequently, this diagnosis, though rare, should be considered in the differentials of upper abdominal pain.