Radiology Lectures | Radquarters

Case of the Week: Gallstone Ileus (X-ray & CT)

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In this radiology lecture, we discuss the appearance of gallstone ileus on x-ray and CT.

Key points include:

  • Gallstone ileus is a rare complication of chronic cholecystitis.
  • Actually not an ileus, but a small bowel obstruction.
  • Gallstone migrates through a fistula between gallbladder and small bowel (usually duodenum) and becomes impacted in the terminal ileum.
  • Stone can also impact in the proximal ileum, jejunum, even in the duodenum/distal stomach causing gastric outlet obstruction (Bouveret syndrome).
  • Rigler triad on abdominal x-ray: Small bowel obstruction, pneumobilia and gallstone in the right iliac fossa.
  • Usually affects the elderly and treated surgically.

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    Radiology Lectures | RadquartersBy Daniel J. Kowal, MD
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