JMA Journal

Figure 1. 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).

Figure 2. Abdominal computed tomography scans 1 year prior showing the gallstone in the gallbladder adjacent to the duodenum.

Figure 3. Gallstone removal by laparotomy.