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Journal Article
Review
Ultrasound and Doppler features of Budd-Chiari syndrome in pediatric population.
Ultrasound Quarterly 2015 March
Budd-Chiari syndrome (BCS) occurs as a result of hepatic venous outflow obstruction. In the pediatric population, the etiologies vary as compared with the adult population. Decompensation can occur faster in this set of patients. Ultrasound and Doppler represent important imaging modalities for diagnosing BCS in children. The imaging features differ depending upon the level of obstruction, acuteness of the condition, and secondary decompensation. Caudate lobe hypertrophy is a salient feature. Obstruction at the level of hepatic veins may be manifested by ostial narrowing, echogenic thrombus, and altered flow patterns in the form of turbulent flow, nonvisualization of the veins, or reversal of flow. Obstruction in the inferior vena cava may present as an echogenic web, membrane, or thrombus with turbulent flow to absent flow within depending upon the degree of luminal compromise. Collateral formation is an important distinctive feature of subacute and chronic BCS. Collaterals that develop may be of intrahepatic or extrahepatic type. Secondary signs of liver failure would be present in late stages. Understanding the clinical presentation and imaging features can help in achieving the correct diagnosis because an early diagnosis of the disease will impact patient management.
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