case_images: PMC11799675_01
case_images: Abdominal computed tomography scans on the present visit showing pneumobilia (yellow arrowhead), the cholecystoduodenal fistula (red arrow), a gallstone (red arrowheads) in the small intestine, and small-bowel obstruction (yellow arrows).
case_images: 2433-3298-8-1-0293-g001.jpg
case_images: PMC11799675_01_2433-3298-8-1-0293-g001.jpg
case_images: fig1
case_images: Abdominal computed tomography (CT) scans showed pneumobilia, a gallstone (20 mm x 30 mm) in the small intestine, and small-bowel obstruction (Rigler's triad) (Figure 1).
case_images: Abdominal computed tomography scans 1 year prior showing the gallstone in the gallbladder adjacent to the duodenum.
case_images: 2433-3298-8-1-0293-g002.jpg
case_images: PMC11799675_01_2433-3298-8-1-0293-g002.jpg
case_images: fig2
case_images: The abdominal CT scans 1 year prior showed a gallstone in the gallbladder adjacent to the duodenum (Figure 2); therefore, the gallstone passed through the cholecystoduodenal fistula owing to repeated chronic cholecystitis.
case_images: Gallstone removal by laparotomy.
case_images: 2433-3298-8-1-0293-g003.jpg
case_images: PMC11799675_01_2433-3298-8-1-0293-g003.jpg
case_images: fig3
case_images: Laparotomy was performed, and the gallstone was finally removed (Figure 3).