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X-ray of Gallstone ileus

Imaging Findings :

Classic triad of
  1. jejunal or ileal filling defect
  2. gas or barium in the biliary tree
  3. small bowel obstruction.

Gallstone ileus is caused by a large gallstone entering the small bowel via a fistula from the gallbladder or the common bile duct to the duodenum. Usually occurs in elderly women.

Gallstone ileus. Upper gastrointestinal series demonstrates the obstructing stone (white arrows) and barium in the biliary tree (black arrow).