Cholecystenteric fistula is one of the rarest complicationsof biliary lithiasis, with a frequency of less than 1%. Bouveret syndrome is a gastric outlet obstruction produced bygallstone(s) located in the distal stomach or proximal duodenum. The route of gallstone migration to the bowel is mostcommonly via a cholecystoduodenal fistula; however, fistulization of the stomach is a rarer variation. Early diagnosis of thissituation is crucial to reduce morbidity and mortality. In thisreport, we present a patient with cholecystogastric fistula andBouveret syndrome. To our knowledge, there is no publishedpaper in the literature related to the diagnosis of Bouveret syndrome with multidetector computed tomography (MDCT) (64detectors) and/or contrast-enhanced magnetic resonance cholangiopancreatography (CE-MRCP). Our aim was to discussthe efficacy of MDCT and CE-MRCP in the detection andevaluation of cholecystenteric fistulas. We showed the exactlocalization and relation of biliary stones and the fistula byMDCT and CE-MRCP. We also evaluated the biliary systemwith CE-MRCP physiologically. In conclusion, when biliarylithiasis and ileus are detected in plain radiography, the firstline diagnostic tool should be MDCT. In complicated casesor when biliary obstruction is suspected, CE-MRCP can giveimportant morphological and physiological information regarding the whole abdomen and biliary system.