Anatomy; Experiment; Genetic similarities;Transplantation; Xenotransplantation

Many investigations on surgical methods and medicaltreatment are currently done on pigs. This is possible because the pig is sufficiently close genetically to humans. In recent years, progress in liver surgery has opened new possibilities in surgical treatment of liver diseases. Because the methods are relatively novel,arious improvements are still needed, and it is thus helpful to conduct experimental surgeries on pig livers. We reviewed the literature to compare the anatomic and functional features of pig and human livers, information that will be of great importance forimproving surgical techniques. During the literaturereview, we used various sources, such as PubMed,Scopus, and veterinary journals. Our results weresummarized in diagrams to facilitate understandingof the vascular structure and biliary systems. Weconclude that, although the shapes of the human andpig livers are quite different, the pig liver is divided into the same number of segments as the human liver, which also shows a common structure of the vascular system. Thus, with the anatomic and structural features of the pig liver taken into account, this animal model can be used in experimental hepatic surgery.