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Biliary atresia - Coggle Diagram

- - - - Ultrasonography:
        
        Considered the initial imaging method.
        
        Findings may include:
        
        Absent or contracted gallbladder.
        
        Assessment of the state of the liver parenchyma.
        
        Triangular cord sign: A well-defined triangular area of increased echogenicity at the porta hepatis, corresponding to fibrotic ductal remnants.
        
        Presence of ascites.
      - Hepatobiliary Scintigraphy:
        
        Key points:
        
        Presence of isotope in the intestine immediately confirms patency of the biliary system, excluding the diagnosis of biliary atresia.
        
        It usually demonstrates good hepatic uptake with absent or reduced excretion after 24 hours.
      - Percutaneous Liver Biopsy:
        
        Considered the most accurate nonsurgical diagnostic test.
        
        Key aspects:
        
        Differentiates biliary atresia from other cholestatic conditions reliably.
        
        Bile ductular proliferation is a diagnostic finding for biliary atresia.
        
        Associated findings:
        
        Bile stasis.
        
        Periportal inflammation.
        
        Identification of giant cells.
        
        Varying degrees of fibrosis.