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Sonographic evaluation of portal hypertension in children
S S Rabinowitz1, K I Norton, K J Benkov
1Department of Pediatrics, Mount Sinai Medical Center, New York, New York.
Insights
Diagnosing pediatric portal hypertension using abdominal sonography involves measuring the lesser omentum. This study evaluates the technique
Area of Science:
- Pediatric Gastroenterology and Hepatology
- Diagnostic Imaging
- Noninvasive Medical Techniques
Background:
- Portal hypertension is a common complication of pediatric cirrhosis, often presenting insidiously.
- Abdominal sonography offers a noninvasive method for diagnosing portal hypertension in children.
- Previous studies utilized lesser omentum diameter measurement via sonography to detect engorged collaterals.
Observation:
- The study successfully applied the sonographic lesser omentum measurement technique in two pediatric cases.
- One case involved an infant with cirrhosis and acquired immunodeficiency syndrome.
- The second case involved a child whose portal hypertension resolved post-liver transplantation.
Findings:
- The lesser omentum diameter measurement via abdominal sonography was successfully employed in two pediatric patients.
- The theoretical underpinnings of this diagnostic technique were critically examined.
- Potential pitfalls and anatomical considerations for sonographers were reviewed.
Implications:
- This study validates the use of sonographic lesser omentum measurement for diagnosing pediatric portal hypertension.
- Critical evaluation and anatomical review provide guidance for accurate application of the technique.
- Modifications are suggested to minimize false positive results, enhancing diagnostic reliability.
Abstract:
Portal hypertension, an expected consequence of cirrhosis, often has an insidious course in children. A noninvasive technique using abdominal sonography has been previously employed by several investigators as a means of diagnosing this condition. Their technique involves sonographically measuring the diameter of the lesser omentum, which increases as a result of engorged collaterals. In this communication, the method is successfully employed in two children, an infant in whom cirrhosis developed who eventually died from acquired immunodeficiency syndrome, and one whose portal hypertension was relieved after orthotopic liver transplantation. Although successful in these two instances, the theoretical basis on which this technique is based is critically evaluated. Anatomical relationships are reviewed that would caution sonographers who attempt to duplicate these studies. Modifications of the technique that will minimize potential false positive results are also discussed.