Imaging examinations revealed a thickening of the gallbladder wall with liver invasion and a thickening of the stomach wall in contact with the gallbladder. Unable to rule out the possibility of a gallbladder cancer invading the stomach and liver, we decided to perform a laparotomy. Intraoperatively, the gallbladder was found to be markedly adhered to the gallbladder bed and antrum of the stomach. No cancer cells were found in an intraoperative frozen section diagnosis. A gallbladder bed resection, distal gastrectomy, and gastrojejunostomy were performed. The pathological diagnosis showed xanthogranulomatous cholecystitis (XGC).