Surgery Bismuth classification for cholangiocarcinoma, type IV is A Common hepatic duct B Bifurcation only C Bifurcation and B/L secondary intrahepatic ducts D Bifurcation and B/L right secondary intrahepatic ducts 💡 Explanation Bismuth classification for cholangiocarcinoma, type IV is ✓ Correct Answer: C. Bifurcation and B/L secondary intrahepatic ducts