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Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
Published on: September 20, 2024
Surgical histopathologic findings of 232 Chinese children cases with drug-resistant seizures
Yao Kun1, Duan Zejun1, Zhou Jian2,3
1Department of Pathology, SanBo Brain Hospital, Capital Medical University, Beijng, China.
Insights
Drug-resistant seizures in children are often linked to malformations of cortical development, particularly focal cortical dysplasia. Shorter epilepsy duration before surgery correlates with better seizure-free outcomes in these pediatric cases.
Area of Science:
- Pediatric Neurology
- Epileptology
- Neuropathology
Background:
- Drug-resistant seizures present significant challenges in childhood, necessitating investigation into underlying pathologies.
- Limited research exists on the specific pathological brain damage in Chinese children experiencing drug-resistant seizures.
- Understanding these pathologies is crucial for improving surgical and treatment outcomes in pediatric epilepsy.
Purpose of the Study:
- To investigate the histopathologic findings in Chinese children (0-14 years) with drug-resistant seizures.
- To analyze the seizure outcomes following epilepsy surgery in relation to identified pathological types.
- To explore the correlation between epilepsy duration and surgical outcomes in specific pediatric patient groups.
Main Methods:
- Retrospective analysis of 232 pediatric cases undergoing epilepsy surgery.
- Review of medical records, including onset age, surgery age, disease course, seizure type, and pathological reports.
- Statistical analysis of seizure outcomes based on histopathological findings and epilepsy duration.
Main Results:
- Malformations of cortical development (MCD), predominantly focal cortical dysplasia (FCD), were the most common pathology (30.60%).
- Tumors (18.11%), glial scars (12.50%), and encephalitis (11.63%) were also significant findings.
- FCD cases with epilepsy duration <2 years showed significantly better seizure outcomes (87.23%) than those with ≥2 years (60.00%). Patients with FCD I, FCD II, and tumors had better postsurgical outcomes.
Conclusions:
- Malformations of cortical development, especially FCD, are the leading pathological cause of drug-resistant seizures in Chinese children.
- A shorter epilepsy duration prior to surgical intervention appears to increase the likelihood of seizure freedom in FCD patients.
- Histopathological findings like FCD and tumors are associated with more favorable postsurgical seizure control.
Objectives:
The drug-resistant seizures are characterized by frequent and severe onset of seizures in childhood. There is only little literature had extensively explored the types of pathological brain damage in Chinese children cases. The present study aims to investigate the histopathologic findings and seizure outcomes of drug-resistant seizures in cases of 0-14-year-old children.
Materials And Methods:
About 232 children cases were retrospectively who underwent epilepsy surgery. The medical records, onset age, age of surgery, disease course, seizure type, pathological reports, and seizure outcomes of these patients were retrospectively analyzed.
Results:
The most common categories were malformations of cortical development (focal cortical dysplasia (FCD) was the most common type (94.36%, 67/71), found in 30.60% of the patients, tumors in 18.11%, glial scar in 12.50%, and encephalitis in 11.63%). It was found that the effective seizure outcome of FCD cases with shorter duration of epilepsy (<2 years, 87.23%) was better than that with longer duration (≥2 years, 60.00%) and the difference was statistically significant (χ2 = 4.76, p < .05). Patients with FCD I, FCD II, and tumor showed the relatively better postsurgical seizure outcome than patients with other pathological types.
Conclusion:
The malformations of cortical development (MCD) (most FCD) were the most common pathological type for children cases in China with drug-resistant seizures. It was speculated further that the FCD patients with shorter duration of epilepsy before surgery seem to have a higher ratio of being seizure-free after surgery.
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