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[Efficacy of scanography in convulsions and epilepsy in children]
Insights
Computed tomography (CT) scans for childhood epilepsy often yield normal or non-specific abnormal results. Careful clinical selection is crucial for effective CT scan use in pediatric seizure evaluations.
Area of Science:
- Pediatric Neurology
- Neuroradiology
- Diagnostic Imaging
Background:
- Computed tomography (CT) is frequently used in the evaluation of pediatric epilepsy and seizures.
- The interpretation of CT findings in children can be challenging, with a significant proportion of results being normal or of uncertain significance.
Purpose of the Study:
- To assess the utility and findings of CT scan examinations in a cohort of 356 children evaluated for epilepsy or seizures.
- To determine the practical significance and specificity of CT scan anomalies in pediatric epilepsy cases.
Main Methods:
- Retrospective analysis of CT scan examinations performed in 356 children.
- Categorization of results into normal, abnormal, and indeterminate findings.
- Evaluation of the clinical impact and specificity of identified anomalies.
Main Results:
- Over 50% of CT scans showed normal results; 40% revealed abnormalities.
- Approximately 10% of scans had interpretation difficulties, particularly concerning pericerebral spaces and ventricular size.
- Most detected anomalies were of limited practical significance and often non-specific.
Conclusions:
- CT scan findings in pediatric epilepsy are frequently normal or non-specific, limiting their diagnostic yield.
- The study highlights the need for careful clinical selection to determine the necessity of CT scans in children with seizures.
- Further investigations, including biopsies, were sometimes prompted by non-specific CT findings, indicating potential over-investigation.
Abstract:
CT scan examinations done in 356 children for epilepsy or occasional seizures showed normal results in over 50% of cases and abnormal results in 40%. The remaining 10% reflect the difficulties in ascertaining that a CT scan examination is normal, particularly regarding pericerebral spaces or ventricular size. The anomalies disclosed on CT scan are of little practical significance. Many of the abnormal results are not specific. An incidence on management was recorded in 5 cases. Other problems which may arise are the connexion between some CT scan findings and epilepsy, or the nature (tumoral or not) of abnormal images. In a few cases, diagnostic investigations or biopsies, which were negative in some instances, were carried out after demonstration of localized decreased density without signs of a space-occupying lesion. The differences in results between the various groups of epileptic patients underscore the necessity of a clinical selection of cases in which a CT scan is required.