A newly described clinical strategy from Texas Children's Hospital and Baylor College of Medicine, published in the World Journal of Pediatric Surgery, aims to shorten the diagnostic delay for biliary atresia (BA), a rare infant liver disease that progresses rapidly if untreated. The approach pairs direct or conjugated bilirubin (DB/Bc) measurements with a feeding abdominal ultrasound exam, offering a practical pathway for early detection.
Biliary atresia, characterized by malformed extrahepatic bile ducts, leads to bile accumulation and progressive liver injury. Early Kasai portoenterostomy (KP) before 30–45 days of life improves long-term outcomes, but diagnosis often occurs after 60 days. The proposed strategy, detailed in a review (DOI: 10.1136/wjps-2025-001142) on March 16, 2026, seeks to address this delay.
The first step involves DB/Bc testing in newborns and during early outpatient visits. Evidence indicates that elevated DB/Bc can appear within 24–48 hours of birth in infants with BA, before other signs emerge. Primary care providers are advised to test at 2–4 weeks for persistent jaundice or pale stools, following AAP guidelines. The second step is a feeding ultrasound, where infants feed before or during imaging to enhance visualization of the duct at the hilum (DaH). Measurements of maximum echogenicity (MxE) near the right portal vein help stratify risk: MxE >4.0 mm or absent DaH prompts urgent evaluation, while other findings may allow continued monitoring.
The authors emphasize that this workflow is designed for the entire care team, from nursery providers to specialists, to make early BA evaluation more actionable. Universal newborn DB/Bc screening could reduce diagnostic delays and address disparities by catching risks before visual signs are missed. The feeding ultrasound avoids fasting and may reduce need for invasive tests. For families, earlier detection could mean faster treatment and better chances of preserving the native liver. Future studies are needed to evaluate implementation and cost-effectiveness across diverse settings.
