Two-stage complications after endoscopic retrograde cholangiopancreatography comprising early retroperitoneal perforation and delayed biliary stent migration: A case report

Figure 2 Delayed sigmoid perforation due to biliary stent migration. A: Plain abdominal radiograph showing distal migration of the biliary stent to the sigmoid colon; B: Axial CT image showing the migrated stent, with one portion remaining within the lumen of the sigmoid colon and the other extending beyond the bowel wall into the abdominal cavity, accompanied by multiple free intraperitoneal air collections; C: Intraoperative photograph showing a perforation of the sigmoid colon, with part of the biliary stent protruding outside the bowel lumen.