Imaging manifestations of Bouveret's syndrome: A rare case report of gallstone-induced ileus.

Bouveret's syndrome, a rare cholelithiasis complication (gallstone impaction via cholecystoduodenal fistula causing gastric outlet obstruction), is reported in an 81-year-old male with chronic cholecystitis, coronary heart disease, and left nephrectomy. He presented with spasmodic epigastric pain, nausea, and vomiting of coffee-ground-like gastric contents. Multimodal imaging confirmed the diagnosis, and laparoscopic gallstone extraction was successful.