Liver transplantation (LT) is a live-saving therapy for patients with complicated chronic liver diseases and acute liver failure .Even though many complications can occur after LT, biliary complications (BC) are both common and potentially severe . a prospective study and retrospective part from hospital records. Aim of the study: 1. Detect frequency, risk factors for development of biliary complications post living donor liver transplantation, types (stricture anastomotic or not, leak, biloma, stone, cholangitis etc.…). 2. Evaluate outcomes of different biliary complications