Fig. 4From: A long survivor with local relapse of hilar cholangiocarcinoma after R1 surgery treated with chemoradiotherapy: a case report and literature reviewComputed tomography of the relapse of cholangiocarcinoma. a, b Intrahepatic bile duct is dilated, and low-density tumor is appreciated at the hilum of the liver. Arrows represent the low density tumor which is the relapse of residual cancer cells at surgical margin of biliary tractBack to article page