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Updated: Jun 28, 2025

Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates
Published on: August 23, 2022
Hyaline cartilage at the portal plate and gallbladder in biliary atresia
Sangamitra Rajasekaran1, Hari Neupane1, Monika Bawa2
1Post Graduate Institute of Medical Education and Research (PGIMER), Department of Histopathology, Chandigarh, India.
Insights
Biliary atresia (BA) in infants can present with unusual cartilage in resected tissues. This finding suggests a potential metaplastic origin, offering new insights into the disease.
Area of Science:
- Pediatric Pathology
- Gastroenterology
- Developmental Biology
Background:
- Biliary atresia (BA) is a serious infantile cholestatic liver disease.
- Early diagnosis and surgical intervention, like Kasai portoenterostomy, are crucial for management.
- Uncommon histological findings in BA require further investigation.
Observation:
- A 2-month-old infant with BA exhibited mature and immature hyaline cartilage.
- Cartilage was identified in the portal plate and gallbladder wall.
- The infant had previously undergone Kasai portoenterostomy.
Findings:
- The presence of cartilage in BA resected tissue is rare.
- Immature cartilage and merging perichondrium suggest a metaplastic process.
- This finding could indicate a heterotopic or metaplastic etiology in BA.
Implications:
- Understanding cartilage presence may refine BA etiological theories.
- This observation could influence diagnostic criteria or treatment strategies.
- Further research into metaplasia in infantile liver diseases is warranted.
Abstract:
Biliary atresia (BA) is a fibro-obliterative cholestatic disease of infancy. The presence of cartilage in the resected tissue is an uncommon finding. We documented the presence of both mature and immature hyaline cartilage in the portal plate and the wall of the gallbladder in a 2-month-old girl infant with BA who had undergone Kasai portoenterostomy. The presence of cartilage could be part of a heterotopia or an uncommon connective tissue metaplasia. The presence of immature cartilage with the merging of the perichondrium with the soft tissue highlights a metaplastic etiology in the index case.
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