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Magnetic resonance imaging of extrahepatic bile duct disruption
Yon-Cheong Wong1, Li-Jen Wang, Ray-Jade Chen
1Department of Radiology, Chang Gung Memorial Hospital, 5, Fu-Hsing Street, Gueishan, 33333 Taoyuan, Taiwan. ycwong@cgmh.org.tw
Abstract:
Blunt injury of the extrahepatic bile duct is rare and hence a large series of scientific study of its MRI is difficult to perform. We present the MRI and MR cholangiography of a case of blunt extrahepatic bile duct injury proven at surgery. The diagnosis could be established based on MRI findings of an abrupt tapering of the extrahepatic bile duct with a retracted end, a discordant small-caliber proximal duct, massive ascites, and a hematoma in proximity to the bile duct injury. This non-invasive MRI study is a promising imaging modality to evaluate biliary tract injury.
Insights
Blunt extrahepatic bile duct injury is rare. Magnetic resonance imaging (MRI) and MR cholangiography can diagnose this injury, showing duct tapering, ascites, and hematoma.
Area of Science:
- Radiology
- Gastroenterology
- Surgical Pathology
Background:
- Blunt trauma to the extrahepatic bile duct is an uncommon injury.
- Large-scale studies on the diagnostic utility of MRI for this condition are limited due to its rarity.
Observation:
- This study presents a case of blunt extrahepatic bile duct injury diagnosed using MRI and MR cholangiography.
- The diagnosis was confirmed intraoperatively.
Findings:
- Key MRI findings included abrupt tapering of the extrahepatic bile duct with a retracted end.
- Associated findings were a discordant small-caliber proximal duct, massive ascites, and a nearby hematoma.
Implications:
- Non-invasive MRI is a valuable tool for evaluating biliary tract injuries.
- This imaging modality aids in the diagnosis of rare blunt bile duct trauma.