Extrahepatic biliary cancer: New staging classification

Figure 9 Distal bile duct tumors. Post-contrast computed tomography (CT) examination of the abdomen in a 58-year-old female with cholangiocarcinoma of the bile duct; A: CT image at a cranial location shows dilatation of the bile duct and bile duct enhancement (green arrow); B: CT image at a caudal location shows enhancement of the distal bile duct. There is a small regional lymph node (yellow arrow). The hepatic artery (white arrow), portal vein (blue arrow), and superior mesenteric artery (red arrow) are spared. Radiologically, appearances are consistent with a T1 tumor (periductal fat not involved) and this was confirmed by pathology.