Type 4 Bismuth classification for cholangiocarcinoma:: (A) Common hepatic duct, (B) Bifurcation only, (C) Bifurcation and bilateral secondary intrahepatic ducts, (D) Bifurcation and unilateral secondary intrahepatic ducts
Answer is C. Ans. (c) Bifurcation and bilateral secondary intrahepatic ductsRef: Sabiston 20th edition Page 1517As per Bismuth Corelette Classification:* Type 4 is involvement of Bilateral 2nd order Bile ducts.