Xanthogranulomatous Cholecystitis and Misdiagnosis Analysis

IntroductIon Gastric sub‐epithelial masses (SEMs) are relatively common findings when receiving gastric endoscopy. It is a mass, bulge, or impression visible. Computed tomography (CT) and magnetic resonance imaging can assist in making a diagnosis, but the final diagnosis depends on histopathological examination. Gastrointestinal stromal tumor (GIST) is a relatively frequent mesenchymal tumor of the gastrointestinal tract. Xanthogranulomatous cholecystitis (XGC) is a benign, chronic inflammatory disease of the gallbladder. Acute inflammation of the gallbladder and calculous outflow obstruction are two main pathogenetic mechanisms. The gallbladder wall may appear irregular and thickened, with adhesions to surrounding tissue, and fistulas may develop into adjacent organs. In this case, because of the XGC, the gallbladder was perforated and adhered to the gastric wall, resulting in misdiagnosing as GIST.