Fig. 1From: A long survivor with local relapse of hilar cholangiocarcinoma after R1 surgery treated with chemoradiotherapy: a case report and literature reviewPreoperative imaging of hilar cholangiocarcinoma. a Stenosis of proximal biliary tract is appreciated through percutaneous transhepatic biliary drainage catheter. b Computed tomography shows the tumor with slight enhancement. Arrow represents the tumorBack to article page