Description

A 76-year-old man presented with right upper quadrant (RUQ) swelling (figure 1A). He required endoscopic retrograde cholangiopancreatography with sphincterotomy 6 months earlier but declined cholecystectomy. CT demonstrated a large gallstone protruding through the abdominal wall (figure 2B). He underwent open cholecystectomy. Histology showed chronic cholecystitis and a fistulous tract.