Elderly woman with midabdominal pain and vomiting
![](https://pic.pimg.tw/cufe/1384525260-5230182.jpg)
Dx: Gallstone ileus, with gastric dilatation and small bowel dilatation
no pneumatosis intestinalis or bowel wall thickening
* Image findings: Rigler's triad
1) pneumobilia (air in biliary tract): in 2/3 patients
2) partial or complete bowel obstruction
3) ectopic gallstone
4) bowel obstruction is usually seen.
calcified stone in 1/4-1/5 patients
* stone size>2.5cm may cause mechanical obstruction
* site: ileocecal valve (76%) > dudenum (21%) > sigmoid colon (2%)
* complications: gastric outlet obstruction, Bouveret's syndrome
# 以上
Reference: AuntMinnie's http://education.auntminnie.com/QMachine.ASP?UID=1UB0YCCL&PageId=1&Sess=5643427
![](https://pic.pimg.tw/cufe/1384525260-2990096294.jpg)
![](https://pic.pimg.tw/cufe/1384525260-5230182.jpg)
Dx: Gallstone ileus, with gastric dilatation and small bowel dilatation
no pneumatosis intestinalis or bowel wall thickening
* Image findings: Rigler's triad
1) pneumobilia (air in biliary tract): in 2/3 patients
2) partial or complete bowel obstruction
3) ectopic gallstone
4) bowel obstruction is usually seen.
calcified stone in 1/4-1/5 patients
* stone size>2.5cm may cause mechanical obstruction
* site: ileocecal valve (76%) > dudenum (21%) > sigmoid colon (2%)
* complications: gastric outlet obstruction, Bouveret's syndrome
# 以上
Reference: AuntMinnie's http://education.auntminnie.com/QMachine.ASP?UID=1UB0YCCL&PageId=1&Sess=5643427
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