title: Biliary atresia and choledochal cyst: introduction.
mesh_terms: D000367:Age Factors; D001652:Bile Ducts / Q000002:abnormalities*; D001660:Biliary Tract Diseases / Q000175:diagnosis / Q000453:epidemiology; D003560:Cysts / Q000151:congenital*; D003937:Diagnosis, Differential; D006505:Hepatitis / Q000175:diagnosis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D007564:Japan; D011379:Prognosis