A 50-year-old man presents with obstructive jaundice. MRCP shows a stricture at the confluence of the left and right hepatic ducts extending into both. This is classified as Bismuth-Corlette type:

• A Type I
• B Type II
• C Type IIIa or IIIb
• D Type IV ✓

Explanation

Bismuth-Corlette classification of hilar cholangiocarcinoma (Klatskin tumour): Type I — below confluence; Type II — at confluence; Type IIIa — extends into right hepatic duct; Type IIIb — extends into left; Type IV — involves both left and right secondary ducts. A stricture at the confluence extending into both ducts is Type IV, which is usually unresectable.

Reference: Bailey & Love's Short Practice of Surgery, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.