Abstract: [Abstract] Objective To describe the vessels and biliary anatomical vatiations of the right liver living donor. Methods Surgical anatomy of vessels and biliary tract structures in 90 right lobe grafts of a single surgical team were reevaluated by reviewing the results of preoperative assessment.The data were analyzed in relation to surgical management of anatomical variations. Results Portal vein (PV): 94.4% had classic anatomy, 5.6% had a trifurcated PV. Hepatic artery (HA):The hepatic artery anatomic variations were very common. Biliary tree: 66.7% had normal anatomy; 20% had a trifurcated biliary anatomy; in 12.2% the right anterior bile duct or the right posterior bile duct opened into the left bile duct; 1.1% was of type 4. Hepatic veins:In 70.0% of the donor,the middle hepatic vein and the left hepatic vein have common trunk;Most(68.8%) veins of S4 import into the left hepatic vein;The incidence of right inferior hepatic vein was 26.6%,which were larger than 5mm.Conclusion The anatomic variations of the liver are very common, detailed and precise assessment of vascular and biliary anatomy is vital for appropriate surgical management.

Key words: living donor liver transplantation, right liver living donor, anantomic variations