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Updated: Aug 22, 2026

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
Published on: September 20, 2024
Abnormal behavior in children with temporal lobe epilepsy and ganglioglioma
Catarina A Guimarães1, Renata C Franzon, Elisabete A P Souza
1Department of Neurology, FCM, UNICAMP Campinas, SP, Brazil.
Insights
Pediatric temporal lobe epilepsy surgery usually controls seizures but can worsen behavior in some children. This is especially true for those with temporal lobe ganglioglioma, even after successful seizure control.
Area of Science:
- Pediatric Neurology
- Neurosurgery
- Developmental Neuroscience
Background:
- Temporal lobe epilepsy (TLE) in children presents diverse clinical, EEG, and etiological features.
- Epilepsy surgery for TLE in childhood often yields good seizure control.
- Postoperative behavioral deterioration can occur in a subset of pediatric patients.
Observation:
- Two young girls (2 and 6 years) with refractory TLE caused by temporal lobe ganglioglioma were studied.
- Both patients displayed pre-existing aggression and hyperactivity linked to their epilepsy.
- Behavioral issues intensified post-surgery despite achieving complete seizure remission.
Findings:
- Temporal lobe ganglioglioma-associated epilepsy in children can present with significant behavioral comorbidities.
- Surgical intervention for TLE in this cohort may exacerbate behavioral disturbances, including aggression and hyperactivity.
- Complete seizure control post-surgery does not preclude worsening of behavioral symptoms.
Implications:
- Clinicians should counsel families about the potential for postoperative behavioral decline in pediatric TLE, particularly with developmental tumors.
- Neurosurgeons and neurologists must consider behavioral monitoring alongside seizure outcomes in pediatric epilepsy surgery.
- Further research is needed to understand the mechanisms underlying behavioral changes after TLE surgery in children with specific tumor types.
Abstract:
Temporal lobe epilepsy in childhood is characterized by great clinical, electroencephalographic, and etiological diversity. The prognosis after temporal lobe epilepsy surgery in childhood is usually good, with most patients achieving complete seizure control. However, in some children behavior deteriorates postoperatively. We report two girls (2 and 6 years of age) with refractory seizures due to temporal lobe ganglioglioma. They exhibited aggression and hyperactivity since the beginning of their epilepsy. In both patients, behavioral disturbances worsened postoperatively, despite complete seizure control. Patients and parents should be advised about possible behavioral disturbances after epilepsy surgery, especially in the presence of a temporal lobe developmental tumor, even when seizure control is achieved postoperatively.
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