Prenatal Ultrasound Features of Biliary Atresia: Diagnostic Significance of Abnormal Gallbladder Size and Hepatic Hilar Cyst

Persistent small or non-visualized fetal gallbladder, along with specific hepatic hilar cyst and other structural abnormalities, are crucial prenatal ultrasound findings for early diagnosis of BA. Early and repeated assessments, incorporating multi-feature observations, are essential for improving differential diagnosis and enhancing optimal outcomes.