A 42 year-old woman without jaundice came to check-up. Her prior history had thyroid cancer for 5 years and intrahepatic biliary dilatation 2 years before but unknown the cause.
Ultrasound noted a hyperechoic mass at the hepatic hilus on normal hepatic bed.
Open surgery was done to remove gallbladder, V-VI subsegment of liver, connecting right hepatic duct to small bowel [Roux-en-Y].
Microscopic result is cholangiocarcinoma invasive and chronic cholecystitis.