Abstract
A 67-year-old woman was admitted with complaints of right hypochondralgia and vomiting. Computed tomography of the abdomen on admission showed atrophic gallbladder with slightly thickened wall. Endoscopic retrograde cholangiography revealed a gallstone, 1 cm in diameter, and a cholecystocolic fistula. Cholecystectomy and fistulectomy were performed under laparoscopy. Histological findings of the tissue around the fistula showed inflammatory granulation with marked fibrosis.