Figure 1.
Magnetic resonance imaging findings and intraoperative choledochoscopy images of the patients. A and B: Choledochoscopy showed a mass in the bile duct of the right anterior lobe during operation; C: Magnetic resonance cholangiopancreatography showed extrahepatic bile duct stones with bile duct dilatation before surgery; D: T2-weighted image showed intrahepatic bile duct stones with bile duct dilatation before surgery; E and F: T2-weighted image and diffusion-weighted imaging showed no tumor recurrence in the liver 72 mo after surgery.