Diseases of the Bile Duct: Cholangitis, Bile Duct Injury, and Choledochal Cyst.

Diseases of the bile duct represent an important group of hepatobiliary disorders with significant morbidity and mortality. This article provides a comprehensive overview of three key conditions: cholangitis, bile duct injury, and choledochal cysts. It discusses their etiology, pathogenesis, clinical features, diagnosis, and management in a structured and student-friendly format.