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Intrahepatic biliary atresia — Clinical Guidelines

Overview

Biliary atresia is a severe pediatric liver disorder characterized by obstruction of the extrahepatic bile ducts, leading to progressive fibrosis and cirrhosis without prompt intervention. Early diagnosis and timely surgical intervention, such as the Kasai portoenterostomy, are crucial for improving outcomes 1 27.

Diagnosis

Clinical Presentation: Persistent jaundice, pale stools, dark urine, and hepatomegaly 27.

Imaging: Ultrasonography often shows characteristic findings like a "small gallbladder sign" and "bright bowel" 22.

Diagnostic Tests:

- Hepatobiliary Scintigraphy (HIDA scan): Essential for confirming absence of bile flow 2 27. - Liver Biopsy: Fibrosis grading can predict prognosis 27. - Metabolomics and Biomarkers: Shear wave elastography and APRi (Aspartate Aminotransferase-to-platelet Ratio Index) show promise in assessing liver damage and fibrosis 1 10 11.

Management

Primary Surgery: Kasai portoenterostomy to establish bile flow 2 27.

Antibiotic Prophylaxis: Common practice post-Kasai, though evidence quality varies 6.

Portal Hypertension Management:

- Endoscopic Treatment: Injection sclerotherapy for varices 3 8. - Surveillance: Regular endoscopic monitoring for high-risk varices based on splenic z-score and bilirubin levels 4 9.

Liver Transplantation: Indicated for end-stage liver disease 3 13 15 23.

Special Populations

Pediatrics: Early intervention is critical; Kasai procedure outcomes vary with age at surgery 27.

Comorbidities: Patients with syndromic biliary atresia (e.g., BASM) may have distinct clinical courses and poorer outcomes 2 15 34.

Key Recommendations

Perform Kasai portoenterostomy as early as possible after diagnosis to optimize bile flow and liver function (Evidence: Strong 2 27).

Utilize shear wave elastography and APRi for non-invasive monitoring of liver fibrosis progression post-Kasai (Evidence: Moderate 1 10 11).

Implement regular endoscopic surveillance for variceal development in children with biliary atresia, guided by splenic z-score and bilirubin levels (Evidence: Moderate 4 9).

Consider liver transplantation for patients with progressive liver failure despite medical management (Evidence: Moderate 13 23).

Use antibiotic prophylaxis post-Kasai with caution due to variable evidence quality (Evidence: Weak 6).

References

1 Brits E, Brown S, Botes L, Sempa JB, Pienaar M. Aspartate Aminotransferase-to-platelet Ratio Index (APRi) as Biomarker for Liver Damage in Biliary Atresia (BA): A Meta-analysis. Journal of pediatric surgery 2025. link 2 Schwarz D, Lam C, Davenport M. Long-Term Reduction of Liver Fibrosis Surrogates in Syndromic Biliary Atresia. Journal of pediatric surgery 2025. link 3 Kajiura H, Uno K, Kume K, Koike T, Saito M, Shimoyama Y et al.. Usefulness of double-balloon endoscopy-assisted injection sclerotherapy for hemorrhagic varices in the jejunum reconstructed for liver transplantation in a pediatric case. Clinical journal of gastroenterology 2025. link 4 Gautam V, Khanna R, Sood V, Lal BB, Laroia ST, Bhatia V et al.. Splenic-Z-score predicts severe portal hypertensive changes on colonoscopy in infants and children with biliary atresia. Journal of pediatric gastroenterology and nutrition 2025. link 5 Good H, Ng VL, Siddiqui A, Sayed BA, Parra DA. A Novel Combined Surgical and Interventional Radiology Vascular Reconstruction, With Stenting of Meso-Rex Bypass, to Successfully Manage Recurrent Portal Venous Flow Obstruction Post Segmental Liver Transplant in a Pediatric Patient. Pediatric transplantation 2025. link 6 Ravanbakhsh N, Chapin CA, Li Y, Jhaveri R. "Where Did This Come From?": Antibiotic Prophylaxis in Biliary Atresia After Kasai Procedure. Journal of the Pediatric Infectious Diseases Society 2024. link 7 So K, Shinagawa T, Yoshizato T, Fukahori S, Asagiri K, Maeno Y et al.. Difficulty in the Diagnosis of Biliary Atresia Splenic Malformation Syndrome In Utero. The Kurume medical journal 2023. link 8 Yokoyama S, Ishizu Y, Honda T, Imai N, Ito T, Yamamoto K et al.. The presence of high-risk varices after sclerotherapy in biliary atresia. Pediatrics international : official journal of the Japan Pediatric Society 2023. link 9 Poddar U, Samanta A, Sarma MS, Kumar B, Lal R, Srivastava A et al.. How to suspect the presence of high-risk esophageal varices and when to start endoscopic surveillance in children with biliary atresia?. Journal of gastroenterology and hepatology 2023. link 10 Wagner ES, Abdelgawad HAH, Landry M, Asfour B, Slidell MB, Azzam R. Use of shear wave elastography for the diagnosis and follow-up of biliary atresia: A meta-analysis. World journal of gastroenterology 2022. link 11 Yeung F, Fung ACH, Chung PHY, Chu YY, Seto WK, Wong KKY. Long-term follow-up of biliary atresia using liver transient elastography. Pediatric surgery international 2022. link 12 Ackermann O, de Boissieu P, Bernard O, Gonzales E, Jacquemin E, Duché M. A Model for Early Endoscopic Detection of High-Risk Gastroesophageal Varices in Children With Biliary Atresia. Journal of pediatric gastroenterology and nutrition 2022. link 13 Bass LM, Ye W, Hawthorne K, Leung DH, Murray KF, Molleston JP et al.. Risk of variceal hemorrhage and pretransplant mortality in children with biliary atresia. Hepatology (Baltimore, Md.) 2022. link 14 Kang Y, Park S, Kim S, Han SJ, Koh H. Validating the BAVENO VI criteria to identify low risk biliary atresia patients without endoscopy for esophageal varix. Clinics and research in hepatology and gastroenterology 2021. link 15 Berauer JP, Mezina AI, Okou DT, Sabo A, Muzny DM, Gibbs RA et al.. Identification of Polycystic Kidney Disease 1 Like 1 Gene Variants in Children With Biliary Atresia Splenic Malformation Syndrome. Hepatology (Baltimore, Md.) 2019. link 16 Lee KJ, Kim JW, Moon JS, Ko JS. Epidemiology of Biliary Atresia in Korea. Journal of Korean medical science 2017. link 17 Connolly K, Beier L, Langdorf MI, Anderson CL, Fox JC. Ultrafest: a novel approach to ultrasound in medical education leads to improvement in written and clinical examinations. The western journal of emergency medicine 2015. link 18 Hirayama Y, Iinuma Y, Yokoyama N, Otani T, Masui D, Komatsuzaki N et al.. Near-infrared fluorescence cholangiography with indocyanine green for biliary atresia. Real-time imaging during the Kasai procedure: a pilot study. Pediatric surgery international 2015. link 19 Zhao D, Han L, He Z, Zhang J, Zhang Y. Identification of the plasma metabolomics as early diagnostic markers between biliary atresia and neonatal hepatitis syndrome. PloS one 2014. link 20 Venkat VL, Shneider BL, Magee JC, Turmelle Y, Arnon R, Bezerra JA et al.. Total serum bilirubin predicts fat-soluble vitamin deficiency better than serum bile acids in infants with biliary atresia. Journal of pediatric gastroenterology and nutrition 2014. link 21 Chu AS, Russo PA, Wells RG. Cholangiocyte cilia are abnormal in syndromic and non-syndromic biliary atresia. Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc 2012. link 22 Sun Y, Zheng S, Qian Q. Ultrasonographic evaluation in the differential diagnosis of biliary atresia and infantile hepatitis syndrome. Pediatric surgery international 2011. link 23 Takahashi Y, Nishimoto Y, Matsuura T, Hayashida M, Tajiri T, Soejima Y et al.. Surgical complications after living donor liver transplantation in patients with biliary atresia: a relatively high incidence of portal vein complications. Pediatric surgery international 2009. link 24 Davit-Spraul A, Baussan C, Hermeziu B, Bernard O, Jacquemin E. CFC1 gene involvement in biliary atresia with polysplenia syndrome. Journal of pediatric gastroenterology and nutrition 2008. link 25 Kobayashi H, Tamatani T, Tamura T, Kusafuka J, Yamataka A, Lane GJ et al.. Maternal microchimerism in biliary atresia. Journal of pediatric surgery 2007. link 26 Akiyama H, Okamura Y, Nagashima T, Yokoi A, Muraji T, Uetani Y. Intracranial hemorrhage and vitamin K deficiency associated with biliary atresia: summary of 15 cases and review of the literature. Pediatric neurosurgery 2006. link 27 Weerasooriya VS, White FV, Shepherd RW. Hepatic fibrosis and survival in biliary atresia. The Journal of pediatrics 2004. link 28 Charearnrad P, Chongsrisawat V, Tepmongkol S, Poovorawan Y. The effect of phenobarbital on the accuracy of technetium-99m diisopropyl iminodiacetic acid hepatobiliary scintigraphy in differentiating biliary atresia from neonatal hepatitis syndrome. Journal of the Medical Association of Thailand = Chotmaihet thangphaet 2003. link 29 Davenport M, Betalli P, D'Antiga L, Cheeseman P, Mieli-Vergani G, Howard ER. The spectrum of surgical jaundice in infancy. Journal of pediatric surgery 2003. link00498-6) 30 Deveci MS, Deveci G. Biliary atresia splenic malformation syndrome--is it a result of embryonically midline rotational defects? A case report. Journal of pediatric surgery 2000. link 31 Matsui A, Shimada T, Sasaki N, Ishikawa T, Momoya T, Makino S. Splenic infarction in a child with portal hypertension secondary to biliary atresia. Journal of pediatric surgery 1997. link90732-6) 32 Oh M, Hobeldin M, Chen T, Thomas DW, Atkinson JB. The Kasai procedure in the treatment of biliary atresia. Journal of pediatric surgery 1995. link90345-3) 33 Prabhakran K. Biliary atresia: Kasai and liver transplantation. Annals of the Academy of Medicine, Singapore 1991. link 34 Karrer FM, Hall RJ, Lilly JR. Biliary atresia and the polysplenia syndrome. Journal of pediatric surgery 1991. link90697-r) 35 Cywes C, Millar AJ. Assessment of the nutritional status of infants and children with biliary atresia. South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde 1990. link 36 Yamagiwa I, Ohta M, Obata K, Washio M. Case report of biliary atresia associated with preduodenal portal vein, ventricular septal defect and bilobed spleen. Zeitschrift fur Kinderchirurgie : organ der Deutschen, der Schweizerischen und der Osterreichischen Gesellschaft fur Kinderchirurgie = Surgery in infancy and childhood 1988. link 37 Deprettere A, Portmann B, Mowat AP. Syndromic paucity of the intrahepatic bile ducts: diagnostic difficulty; severe morbidity throughout early childhood. Journal of pediatric gastroenterology and nutrition 1987. link 38 Lilly JR, Stellin G. Variceal hemorrhage in biliary atresia. Journal of pediatric surgery 1984. link80279-1)

Intrahepatic biliary atresia