A 74-year-old man, who had a history of choledocho-lelithiasis with obstructive jaundice treated by endoscopic papillary balloon-dilation method, admitted to our hospital, because of treatment of diabetes mellitus.
Abdominal CT showed cholelithiasis and wall thickening of the gallbladder. We suspected gallbladder cancer, and performed endoscopic retrograde cholangiography (ERC) . When we inserted endoscope, cholelith was found in the antrum of the stomach, and ERC visualized common bile duct (CBD) , atrophic gallbladder and also the stomach. We found fistula on the greater curvature of the antrum, and injected contrast agents under balloon-occlusion, therefore atrophic gallbladder and CBD was seen, and made confirmation as cholecystogastric fistula. Then we collected cholelith endoscopically. Surgical operation was performed with a diagnosis of chronic cholecystitis.
Cholecystogastric fistula is very rare among the spontaneous internal biliary fistulae. It is difficult to make a preoperative diagnosis of cholecystogastric fistula, but in our case, we timely performed an examination of ERC, therefore we found cholelith and fistula in the stomach, and were able to confirm as cholecystogastric fistula.
