Congenital Abnormality
biliary atresia
bil·i·ar·y a·tre·sia [ bil-ee-er-ee-bil-yuh-ree uh-tree-zhuh, -zhee-uh ]
Subclass of:
Congenital digestive system anomalies; Bile Duct Diseases
Definitions related to biliary atresia:
  • A congenital disorder characterized by blockage or absence of the intrahepatic or extrahepatic bile ducts.
    NCI
    U.S. National Cancer Institute, 2021
  • Atresia of the biliary tree.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • 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.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (isolated biliary atresia) Biliary atresia is a rare, progressive obliterative cholangiopathy of the extrahepatic bile ducts, occuring in the embryonic/ perinatal period, leading to severe and persistent jaundice and acholic stool with an unfavorable course in the absence of treatment.
    OrphaNet
    INSERM, 2021
  • Biliary atresia is obstruction of the biliary tree due to progressive sclerosis of the extrahepatic bile duct. Diagnosis is by blood tests, ultrasonography, liver biopsy, and hepatobiliary scan. Treatment is surgical.
    Merck Manuals
    Merck & Co., Inc., 2025
  • Biliary atresia is obstruction of the biliary tree due to progressive sclerosis of the extrahepatic bile duct. Diagnosis is by blood tests, ultrasonography, liver biopsy, and hepatobiliary scan. Treatment is surgical.
    Merck Manuals
    Merck & Co., Inc., 2025
  • Biliary atresia is a rare, progressive obliterative cholangiopathy of the extrahepatic bile ducts, occuring in the embryonic/ perinatal period, leading to severe and persistent jaundice and acholic stool with an unfavorable course in the absence of treatment. (Orphanet #30391)
    NIH Genetic and Rare Diseases
    National Center for Advancing Translational Sciences
  • Biliary atresia is a progressive idiopathic, necroinflammatory process that may involve a segment or the entire extrahepatic biliary tree. Even with appropriate, timely surgical intervention, it is often an unrelenting inflammatory process.
    Epocrates
    Athenahealth, Inc., 2019
Try this search on: Farlex, Merriam-Webster, Oxford Dictionary, or Wordnik

This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.