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

In this radiology lecture, we discuss the appearance of gallstone ileus on x-ray and CT. Key points include: 1) Gallstone ileus is a rare complication of chronic cholecystitis. 2) Actually not an ileus, but a small bowel obstruction. 3) Gallstone migrates through a fistula between gallbladder and small bowel (usually duodenum) and becomes impacted in the terminal ileum. 4) Stone can also impact in the proximal ileum, jejunum, even in the duodenum/distal stomach causing gastric outlet obstruction (Bouveret syndrome). 5) Rigler triad on abdominal x-ray: Small bowel obstruction, pneumobilia and gallstone in the right iliac fossa. 6) Usually affects the elderly and treated surgically. Click the Community tab or follow on social media for bonus teaching material posted throughout the week! Website: http://www.radiologistHQ.com Podcast: http://bit.ly/radiologistHQ Instagram:   / radiologisthq   Facebook:   / radiologistheadquarters   Twitter:   / radiologisthq