Course of Segment 4 Hepatic Artery Affects Proximal Ductal Margin Status in Right Hepatectomy for Perihilar Cholangiocarcinoma

The course of the segment 4 hepatic artery affects the proximal ductal margin status in right hepatectomy for perihilar cholangiocarcinoma. The study found that the l-up type of the artery, running along the left cranial position of the umbilical portion of the left portal vein, was associated with a higher rate of negative proximal ductal margins compared to the r-up type. Bismuth-Corlette type II and IIIA and the l-up type were independent predictors of negative proximal ductal margin after a right hepatectomy for perihilar cholangiocarcinoma.