<unk> , also known as extrahepatic ductopenia and progressive obliterative cholangiopathy, is a childhood disease of the liver in which one or more bile ducts are abnormally narrow, blocked, or absent. It can be congenital or acquired. It has an incidence of one in 10,000–15,000 live births in the United States, and a prevalence of one in 16,700 in the British Isles.<unk>  is most common in East Asia, with a frequency of one in 5,000. The cause of<unk>  in Egyptian infants has been proven to be as a result of aflatoxin induced cholangiopathy acquired prenatally in infants who have glutathione S transferase M1 deficiency. The<unk>  phenotype caused by congenital aflatoxicosis in GST M1 deficient neonates is named Kotb disease. Syndromic<unk>  (e.g.<unk>  Splenic Malformation <unk> SM)) has been associated with certain genes (e.g. Polycystic Kidney Disease 1 Like 1 - PKD1L1), and some infants with isolated<unk>  may arise as a result of an autoimmune inflammatory response, possibly due to a viral infection of the liver soon after birth. In animals plant toxins have been shown to cause<unk> . The only effective treatments are operations such as the Kasai procedure and liver transplantation.
Biliary atresia
Vanishing bile duct syndrome
Neonatal cholestasis
Congenital hepatic fibrosis
Neonatal jaundice
Progressive familial intrahepatic cholestasis
Biliary disease
Choledochal cysts