Texas doctors map faster path to catch biliary atresia in infants

A review from Texas Children's Hospital and Baylor College of Medicine outlines a two-step screening pathway that could help doctors identify biliary atresia earlier, when surgery works best. The strategy combines direct or conjugated bilirubin testing with a feeding ultrasound exam to speed referral and cut down on unnecessary invasive workups.

Why it matters: - Biliary atresia can progress quickly in infants and cause irreversible liver injury before a diagnosis is made. - Earlier Kasai portoenterostomy gives infants the best chance to delay or avoid liver transplantation. - A faster screening pathway could help primary care teams spot affected babies sooner and reduce missed cases. - The approach may also improve equity by finding risk before pale stools or other visible signs are recognized.

What happened: - Researchers from Texas Children's Hospital and Baylor College of Medicine, with collaborators from Stanford University School of Medicine, published a review on March 16, 2026, in World Journal of Pediatric Surgery. - The review describes a practical pathway developed at a Texas pediatric center to speed biliary atresia diagnosis. - The pathway pairs direct or conjugated bilirubin testing with BiliScreen.org and a feeding abdominal ultrasound exam. - The source article is available at the study DOI.

The details: - Direct or conjugated bilirubin can be elevated in the first 24 to 48 hours of life in infants with biliary atresia. - The review says primary care providers should test direct or conjugated bilirubin at 2 to 4 weeks when jaundice persists, stools are pale, or an earlier high result was already recorded, consistent with American Academy of Pediatrics guidance. - The ultrasound step is designed for infants with high direct or conjugated bilirubin levels. - The infant feeds before or during imaging instead of fasting. - Feeding can make the duct at the hilum easier to see. - The exam also measures maximum echogenicity near the right portal vein. - In the proposed workflow, maximum echogenicity greater than 4.0 mm or an absent duct at the hilum raises concern for biliary atresia and may trigger definitive evaluation. - Other findings may support continued outpatient follow-up instead of immediate invasive testing. - The review says early diagnosis is difficult because jaundice can resemble common newborn conditions and pale stools may not appear right away. - The disease is thought to begin before birth when the extrahepatic bile ducts do not form properly. - After birth, bile buildup drives progressive liver injury and increases the risk of transplantation. - Studies cited in the review show better long-term outcomes when treatment happens before 30 to 45 days of life. - Diagnosis often does not happen until after 60 days.

Between the lines: - The pathway tries to make biliary atresia workup more actionable for nursery staff, primary care providers, radiologists, hepatologists, and surgeons. - The strategy is meant to guide decision-making, not replace specialist judgment. - Universal newborn direct or conjugated bilirubin screening could shorten delays and catch infants before visual symptoms are missed or misread. - A feeding ultrasound may lower the burden of follow-up by avoiding fasting and possibly reducing reliance on anesthesia or invasive procedures. - The review reflects a push for faster, simpler, and more equitable diagnostic workflows in a disease where timing strongly affects outcomes.

What's next: - The authors want other centers to test the pathway and adapt useful pieces to their own workflows. - Future studies will need to measure implementation, cost-effectiveness, and performance across multiple centers and healthcare systems. - Broader adoption could reshape how infants with possible biliary atresia move from screening to specialist evaluation.

The bottom line: - Earlier bilirubin testing plus feeding ultrasound could give doctors a more practical way to find biliary atresia before the treatment window closes.