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Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
Published on: September 20, 2024
Seizures as the clinical presenting symptom in children with brain tumors
Aviva Fattal-Valevski1, Noam Nissan, Uri Kramer
1Pediatric Neurology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Insights
Pediatric brain tumors can present as seizures, even with normal exams. Early imaging is crucial for diagnosis, as treatment often leads to seizure freedom.
Area of Science:
- Pediatric Neurology
- Neurosurgery
- Clinical Oncology
Background:
- Seizures are a common presenting symptom in pediatric brain tumors.
- Diagnostic delays can occur despite normal neurological examinations and electroencephalography (EEG).
Purpose of the Study:
- To review clinical and surgical outcomes of pediatric brain tumors presenting with seizures.
- To analyze the diagnostic gap and long-term seizure control post-surgery.
Main Methods:
- Retrospective analysis of 367 pediatric patients treated for brain tumors (1996-2007).
- Focus on clinical presentation, diagnostic challenges, and 2-year postoperative seizure follow-up.
Main Results:
- 57 of 367 children presented with seizures, predominantly focal.
- Normal neurological examination (77.8%) and EEG (37.5%) were common.
- Seizure freedom was achieved in 77.6% postoperatively.
- Favorable outcomes linked to infrequent seizures, response to antiepileptic drugs, and hemispheric location.
Conclusions:
- Normal neurological exams, EEG, and initial response to antiepileptic drugs should not rule out brain tumors in children with seizures.
- Consider broader imaging indications for pediatric seizures to reduce diagnostic delays.
Abstract:
This study summarizes our clinical and surgical experience with pediatric brain tumors that were initially presented with seizures. The records of 367 consecutive children, treated for brain tumors between the years 1996 and 2007, were retrospectively analyzed, focusing on the clinical manifestations, diagnostic gap, and postoperative seizure follow-up that lasted at least 2 years. Seizures, mainly focal, were the clinical manifestation of brain tumor in 57 of 367 children. Normal neurologic examination and electroencephalography (EEG) were in 77.8% and 37.5%, respectively. Diagnostic gap correlated with low-grade and temporal lobe tumors. Postoperative follow-up revealed freedom of seizure in 77.6%. Favorable seizure outcome correlated with low preoperative seizures frequency, preoperative response to antiepileptic drugs, and hemispheric tumor location. We conclude that response to antiepileptic drugs, generalized seizures, normal EEG, and normal neurologic examination should not exclude tumor etiology. Moreover, broader indications for imaging should be employed while evaluating a child with a seizure.
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