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Updated: Oct 13, 2025
Isolation of Neonatal Extrahepatic Cholangiocytes
Published on: June 5, 2014
An Unusual Cause of Cholestasis in an Infant: Biliary Atresia Type IIB
Poonam Sherwani1, Rishi Bolia2, Ashish Kaushik1
1Department of Radiodiagnosis, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India.
Insights
Biliary atresia (BA), a rare infant liver disease, typically affects the porta hepatis. This report details imaging findings in a rare case of type IIB biliary atresia, involving the common hepatic duct.
Area of Science:
- Pediatric Gastroenterology
- Hepatology
- Medical Imaging
Background:
- Biliary atresia (BA) is a severe infantile cholangiopathy with unknown causes.
- It occurs globally, with higher prevalence in Asia.
- BA classification depends on the obstruction site in the extrahepatic bile duct.
Observation:
- Type III BA, obstructing the porta hepatis, is most common (~85%).
- Type II BA, affecting the common hepatic duct, is rare (~2.5%).
- This case presents imaging features of type IIB biliary atresia.
Findings:
- Detailed imaging characteristics of a rare type IIB biliary atresia case.
- Highlights the specific anatomical location of obstruction in the common hepatic duct.
- Contributes to understanding the spectrum of BA presentations.
Implications:
- Enhances diagnostic accuracy for rare BA subtypes.
- Informs clinical management and surgical approaches for affected infants.
- Supports further research into BA etiology and classification.
Abstract:
Biliary atresia (BA) is a progressive destructive cholangiopathy of unknown etiology that presents in early infancy. It has a worldwide frequency of 1:8,000-1:15,000 and is common in Asia than in the west. Based on the level at which the lumen of the extrahepatic duct is obliterated, BA is classified into three types. Type III is the commonest (∼85%) type and has the most proximal level of obstruction in the porta hepatis, while type II in which the atresia is at the level of the common hepatic duct, is the least common (∼2.5%) and has been rarely reported. Here, we report the imaging features of an infant with type IIB biliary atresia.
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