 The ORANGE-II trial is a prospective randomised controlled parallel group superiority trial with a double-blinded experimental and a prospective registry design to determine whether laparoscopic surgery is to be preferred over open surgery in patients undergoing a left lateral hepatic sectionectomy within an enhanced recovery programme. The experimental design produces two randomised arms; a open LLS and b laparoscopic LLS. An additional registry arm will be based on surgeonspatients that do not want to be randomised because they have an explicit preference for either the laparoscopic LLS or for the open LLS c. 