A 64-year-old man with fecal vomiting is the 20th patient recorded with a cholecysto-duodeno-colic fistula and the second to have a concomitant gallstone ileus. All 20 cases have been due to complicated cholelithiasis. A survey reveals the cardinal features to be that of vomiting (often feculent), air in the biliary tree on roentgenograms, and the invariable demonstration by barium enema of a colonic fistula.
Shocket E, Evans J, Jonas S. Cholecysto-duodeno-colic Fistula With Gallstone Ileus. Arch Surg. 1970;101(4):523–526. doi:10.1001/archsurg.1970.01340280075020