Most common site of gall stone impaction is: (A) Duodeno-jejunal junction, (B) Proximal to ileocaecal junction, (C) Distal to ileocaecal junction, (D) Colon
Answer is B. Gall stone ileus It is an acute intestinal obstruction, often seen in elderly and is due to Blockage be a bolus or mass of gallstones which commonly enter the intestines through cholecystoduodenal fistula (75%) or rarely through cholecystointestinal or gastric fistula MC site : Between gallbladder and duodenum 2nd MC site : Between gallbladder and transverse colon Obstruction is seen in Distal ileum or proximal to ileocaecal junction Ref: SRB's Manual of Surgery 5th edition Pgno : 648