Biliary Duct Dilation

A 45 year-old male presents with progressive jaundice over 1 month, he denies abdominal pain.

Ultrasound

Liver
Common Bile Duct
Gallbladder Wall

CT Abdomen/Pelvis

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  • Markedly dilated intrahepatic biliary ducts, common bile duct and pancreatic duct.
  • Ill-defined fullness in the pancreatic head consistent with pancreatic adenocarcinoma vs. noncalcified obstructing biliary stone.

Differential Diagnosis of Biliary Duct Dilation: 1,2,3

Differential Diagnosis of Biliary Duct Dilation

References:

  1. Kim, H. J., Lee, K. T., Kim, S. H., Lee, J. K., Lim, J. H., Paik, S. W., & Rhee, J. C. (2003). Differential diagnosis of intrahepatic bile duct dilatation without demonstrable mass on ultrasonography or CT: benign versus malignancy. Journal of gastroenterology and hepatology, 18(11), 1287–1292.
  2. Levy, A. D. (2009). Biliary Ducts – Pathology. The Radiology Assistant, 1–4. Retrieved from http://www.radiologyassistant.nl/en/p49e17de25294d/biliary-ducts-pathology.html
  3. Teefey, S. A., Baron, R. L., Schulte, S. J., Patten, R. M., & Molloy, M. H. (1992). Patterns of intrahepatic bile duct dilatation at CT: correlation with obstructive disease processes. Radiology, 182(1), 139–142. doi:10.1148/radiology.182.1.1727277