In the past, liver resections and liver transplantations were performed by different surgical teams, with very little interplay between the two. However, the evolution toward more complex operations called for an increasingly intense interaction between these surgical techniques: split liver and living donor liver transplantation have become popular in the transplant community, utilizing the Coinaud segmental anatomy in a very sophisticated way, while portal and arterial resection and reconstruction have become indispensable methods for treating Klatskin tumors infiltrating the hepatic hilum.