Application of endoscopic retrograde cholangiopancreatography for treatment of obstructive jaundice after hepatoblastoma surgery: A case report

Figure 4 Treatment of the patient. A: Inability and difficulty in passing the stenosis using a 7 Fr nasobiliary drainage tube; B: Smooth passage of a 5 Fr nasopancreatic tube through the stenosis; C: Dilatation of the bile ducts in the porta hepatis with visualization of the intrahepatic bile duct and the middle and lower common bile ducts; D: Smooth placement of a 7 Fr nasobiliary drainage tube.