title: Cholecystosigmoid fistula.
mesh_terms: D000368:Aged; D001658:Biliary Fistula / Q000175:diagnosis; D005402:Fistula / Q000175:diagnosis*; D005705:Gallbladder Diseases / Q000175:diagnosis*; D006801:Humans; D007412:Intestinal Fistula / Q000175:diagnosis*; D008297:Male; D012810:Sigmoid Diseases / Q000175:diagnosis*