Biliary System Anatomy, Physiology, and Embryology -- Primary Sclerosing Cholangitis -- Counterpoint Chapter: Primary Sclerosing Cholangitis -- Biliary Manifestations of Chronic Pancreatitis -- Biliary Manifestations of Chronic Pancreatitis Invited Commentary -- Autoimmune Pancreatitis -- Counterpoint: Biliary Manifestations in Autoimmune Pancreatitis -- Recurrent Pyogenic Cholangitis -- Proximal Biliary Strictures Mimicking Hilar Cholangiocarcinoma -- Traumatic Biliary Strictures -- Invited Commentary: Comprehensive Management of Benign Biliary Stenosis and injury -- Perceptual Errors Leading to Bile Duct Injury during Laparoscopic Cholecystectomy -- Invited Commentary on "Perceptual Errors Leading to Bile duct Injury during Laparoscopic Cholecystectomy" -- The Classification and Injury Patterns of Iatrogenic Bile Duct Injury During Laparoscopic Cholecystectomy -- Invited commentary on "The Classification and Injury Patterns of Iatrogenic Bile Duct Injury During Laparoscopic Cholecystectomy" -- The Heuristics and Psychology of Bile Duct Injuries -- The Heuristics and Psychology of Bile Duct Injuries Invited Commentary -- Bile Duct Injuries and the Law -- Invited Commentary on 'Bile Duct Injuries and the Law' -- Intraoperative Management of Bile Duct Injuries by Non-Biliary Surgeon -- Invited Commentary: "Intraoperative Management of Bile Duct Injuries by the Non-Biliary Surgeon" -- Management of Bile Duct Injuries Within the First Forty-eight Hours -- Commentary: Management of Bile Duct Injuries Within the First Forty-eight Hours -- Endoscopic Management of Bile Duct Injury during Laparoscopic Cholecystectomy -- Operative Repair of Common Bile Duct Injury -- Liver Resection for Bile Duct Injury -- Hepatic Resection for Bile Duct Injury -- Liver Transplantation for Common Bile Duct Injury -- Liver Transplant for Bile Duct Injury -- Biliary Strictures from Liver Transplantation -- Invited Commentary: Biliary Strictures from Liver Transplantation -- Recurrent BiliaryStrictures after Initial Biliary Reconstruction.