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Diagnostic Value of a Modified Version of Wilson's Diagnostic Score in Pediatrics
S Sajedianfard1, M Ataollahi2, S M Dehghani2,3
1Department of Pediatrics, Shiraz University of Medical Sciences, Shiraz, Iran.
Insights
A new questionnaire effectively diagnoses Wilson's disease (WD) in children. This tool shows high sensitivity and specificity, aiding diagnosis, especially where specialized lab tests are unavailable.
Area of Science:
- Pediatric Hepatology
- Genetic Metabolic Disorders
- Diagnostic Tool Development
Background:
- Wilson's disease (WD) is an inherited disorder impacting copper metabolism.
- Accurate diagnosis in children is crucial for timely intervention.
Purpose of the Study:
- To evaluate a novel questionnaire for diagnosing Wilson's disease in pediatric patients.
- To assess the diagnostic accuracy of the modified questionnaire against established methods.
Main Methods:
- A 4-item modified questionnaire was administered to 70 children with confirmed WD and 70 controls.
- Diagnostic performance was compared to liver biopsy (gold standard).
- Sensitivity, specificity, and accuracy were calculated at a cut-off score of 2.5.
Main Results:
- Children with WD had significantly higher median scores (4) than controls (0).
- The questionnaire achieved 100% sensitivity and 98.6% specificity at a score of 2.5.
- 100% accuracy was observed when classifying patients who had undergone liver transplantation.
Conclusions:
- The modified scoring system demonstrates high sensitivity and specificity for diagnosing pediatric Wilson's disease.
- This tool offers a valuable, accessible diagnostic aid, particularly in resource-limited settings.
- The questionnaire facilitates early identification and management of Wilson's disease in children.
Abstract:
Background: Wilson's disease (WD) is an autosomal-recessive hereditary liver disease affecting copper metabolism.
Objective:
To test the diagnostic value of a questionnaire for the diagnosis of WD in pediatrics age group.
Methods:
70 children with biopsy-proven diagnosis of WD and 70 without WD were included in the study. A modified questionnaire with 4 items was used for the diagnosis of WD. The results were then compared to the definite diagnosis made by pathology (the gold standard test).
Results:
The median (IQR) modified score in those with WD was 4 (4-5), significantly (p<0.001) higher than that calculated for the comparison group, which was 0 (0-1). The most appropriate cut-off value for the score was 2.5, corresponding to a sensitivity and specificity of 100%, and 98.6%, respectively. Using this cut-off value to classify 20 children with and without WD who underwent liver transplantation resulted in an accuracy of 100%.
Conclusion:
The modified scoring system is a sensitive and specific diagnostic tool for the diagnosis of WD in children. This is especially important in regions with limited access to specific laboratory tests for the diagnosis of WD.
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