[Diagnostic Imaging of Biliary Atresia]

Area of Science:

• Pediatric Radiology
• Neonatal Imaging
• Gastrointestinal Imaging

Context:

• Biliary atresia is a rare but serious cause of neonatal cholestasis.
• Accurate and timely diagnosis is crucial for effective management and improved prognosis.
• Current diagnostic approaches involve various imaging modalities.

Purpose:

• To review and synthesize the key imaging findings of biliary atresia across multiple modalities.
• To highlight the role of ultrasonography as the primary initial imaging study.
• To discuss imaging's utility in predicting hepatic fibrosis and addressing diagnostic challenges in neonates.

Summary:

• Ultrasonography, MRI, hepatobiliary scans, and cholangiography are utilized for diagnosing biliary atresia.
• Key ultrasonographic findings include abnormal gallbladder morphology, the 'triangular cord' sign, absent common bile duct, and increased hepatic arterial flow.
• Combined anomalies are also noted, and imaging can assist in assessing hepatic fibrosis.

Impact:

• This review aims to enhance the diagnostic accuracy of biliary atresia.
• Improved diagnostic capabilities can lead to earlier intervention and better patient outcomes.
• Provides a comprehensive overview for clinicians involved in neonatal cholestasis diagnosis.