This book provides a thorough overview of the radiologic and pathologic findings of neoplastic diseases of the biliary tract, a sound knowledge of which is essential for appropriate patient management. A key feature is the correlation of imaging findings with both gross pathologic and histopathologic findings for each disease. This is of the utmost importance in understanding true pathologic abnormalities, bearing in mind, for example, the difficulty in ascertaining disease spread and extent on the basis of pathology alone. Since the first edition of the book, conceptual understanding of neoplastic disease of the bile ducts and cholangiocarcinogenesis has evolved significantly, and in the new edition the classification of diseases is based on the most recent edition of the WHO Classification of Tumors of the Digestive System. In addition, some newly recognized pathologies are covered. The book will enhance understanding of the pathology of neoplastic diseases of the biliary tract and aid imaging interpretation. It will be a great asset for pathologists, radiologists, biliary surgeons, and gastroenterologists.