Complications involving the biliary tract after orthotopic liver transplantation (OLT) have been a common problem since the early beginning of OLT.l As a consequence of the limited deceased donor pool, more OLTs are performed using alternative techniques such as living donor liver transplantation and split-liver transplantation. Approximately 5 % of OLTs are currently conducted as adult-to-adult right lobe liver transplantations. 2 These emerging methods have altered the incidence and characteristics of biliary complications. The most common biliary complications are biliary leaks and strictures. However, there is a wide range of potential biliary complications that can occur after liver transplantation (Table 62-1). Their incidence varies according to the type of graft, type of donor (deceased donor versus living donor), and the type of biliary anastomosis performed. According to the time of onset after OLT, biliary complications may be divided into early and late complications. Approximately two thirds of all biliary complications occur as early complications within the first 3 months after OLT and are a significant source of morbidity and mortality. 3 Early diagnosis and adequate treatment of biliary complications are pivotal for reducing biliary-related morbidity and mortality and for ensuring graft and 929