This paper reports a case of Caroli's
disease confined to the left lobe of the liver that mimicked left portal
vein thrombosis on MRI studies because of the very high signal intensity
on T1-weighted images of intrahepatic pigmented calculi. The preoperative
diagnosis was a cholangiocarcinoma infiltrating the left hepatic bile duct
and portal branch. The final macroscopic and histological diagnosis was
Caroli's disease of the left liver lobe with wide enlarged left bile duct
containing multiple pigmented calculi.
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