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Computer tomography in children with electrophysiological abnormalities
A Fernandez-Bouzas1, F Malacara, H Ramirez
1Hospital 20 de Noviembre, ISSSTE, México.
Insights
Computed tomography (CT) scans revealed abnormalities, particularly in the left temporal lobe, in children with learning disabilities (LD). These findings suggest CT is valuable for identifying potential causes of LD in children.
Area of Science:
- Neuroscience
- Pediatrics
- Radiology
Background:
- Learning disabilities (LD) affect numerous children, impacting academic and developmental trajectories.
- Identifying the underlying neurological causes of LD is crucial for targeted interventions.
- Electrophysiological assessments, including EEG and evoked potentials, can indicate brain dysfunction.
Observation:
- A cohort of 43 children, including 15 with LD, underwent computed tomography (CT) examinations.
- Children were selected based on electrophysiological abnormalities detected via routine EEG, quantitative EEG, and/or evoked response testing.
- Abnormalities were identified in the CT scans of 7 children (6 with LD, 1 control).
Findings:
- The most common CT finding in affected children was a lesion in the left temporal lobe.
- This left temporal lobe localization correlates with known roles in reading and writing processes.
- High concordance was observed between CT-identified lesion locations and electrophysiological abnormalities (quantitative EEG, visual evoked responses).
Implications:
- CT examination is a valuable tool for investigating the anatomical basis of learning disabilities in children.
- Identifying left temporal lobe abnormalities may provide insights into the etiology of specific learning disorders.
- These findings support the routine use of CT scans in the diagnostic workup of children with learning disabilities.
Abstract:
A computed tomography examination was carried out in a group of 43 children, of whom 15 had learning disabilities (LD). Children were selected with electrophysiological abnormalities in the routine EEG, in the quantitative EEG analysis and/or in the visual cortical and auditory brainstem evoked responses. Seven children, 1 control and 6 LD, had abnormalities in the computed tomography. The most frequent localization of the lesion was the left temporal lobe. This localization might explain the origin of the learning disorder, since the left temporal lobe is involved in reading and writing processes. There was a great concordance between the anatomical localization of the lesion by the computed tomography and the place of electrical abnormalities in the quantitative EEG and the visual evoked responses. These results strongly support the indication of a computed tomography examination in LD children.