Surgery A patient with primary sclerosing cholangitis developed cholangiocarcinoma. Which is the MOST common site of cholangiocarcinoma? A Distal biliary duct B Hilum C Intrahepatic duct D Multifocal 💡 Explanation A patient with primary sclerosing cholangitis developed cholangiocarcinoma. Which is the MOST common site of cholangiocarcinoma? ✓ Correct Answer: B. Hilum