title: Answer to case of the month #57. Gallstone ileus.
authors.affiliation: Department of Radiology, Sir Mortimer B. Davis-Jewish General Hospital, Montreal, Que.
authors.forename: D R
authors.initials: DR
authors.lastname: Zander
authors.forename: M
authors.initials: M
authors.lastname: Rosenbloom
mesh_terms: D000368:Aged; D001466:Barium Sulfate; D002769:Cholelithiasis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D007077:Ileal Diseases / Q000175:diagnosis* / Q000601:surgery; D007415:Intestinal Obstruction / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D014463:Ultrasonography
chemical_list: D001466:Barium Sulfate