Progressive destruction or the absence of all or part of the extrahepatic BILE DUCTS, resulting in the complete obstruction of BILE flow. Usually, biliary atresia is found in infants and accounts for one third of the neonatal cholestatic JAUNDICE.

Synonyms: Familial Extrahepatic Biliary Atresia, Extrahepatic Biliary Atresia, Idiopathic Extrahepatic Biliary Atresia, Biliary Atresia, Intrahepatic, Atresia, Biliary, Biliary Atresia, Atresia, Intrahepatic Biliary, Biliary Atresia, Extrahepatic, Atresia, Extrahepatic Biliary, Intrahepatic Biliary Atresia