ABSTRACT
Pathology BA can be classified by using macroscopic appearance and cholangiography findings according to three main categories. Types I, II, and III are defined as atresia at the site of the common bile duct, at the site of the hepatic duct, and up to the porta hepatis, respectively. Type III is most common. A patent duct that can be anastomosed to the intestine at the porta hepatis is present in 5% of cases. In more than 90% of cases, no normal ductal structures are seen at the porta hepatis ( 5 ).
