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[Temporal lobe epilepsy. Surgical treatment]

A Rassi Neto1, C J De Campos, M Muszkat

  • 1Departamento de Neurología e Neurocirurgia da Universidade Federal de São Paulo-Escola Paulista de Medicina, Brasil.

Arquivos De Neuro-Psiquiatria
|December 1, 1996
PubMed
Summary

Surgical management of intractable temporal lobe epilepsy improved seizure control. Resecting brain lesions yielded higher success rates (83.4% seizure-free) than temporal lobectomy (71.4% seizure-free) in patients with medically refractory epilepsy.

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Area of Science:

  • Neurosurgery
  • Epileptology
  • Neurology

Background:

  • Medically intractable seizures often originate from the temporal lobe.
  • Surgical intervention is considered for patients with refractory epilepsy.
  • Identifying the epileptiform focus is crucial for successful surgical outcomes.

Purpose of the Study:

  • To evaluate the surgical management of 32 patients with medically intractable temporal lobe epilepsy.
  • To compare the efficacy of lesion resection versus temporal lobectomy in seizure control.
  • To analyze the impact of underlying cerebral lesions on surgical outcomes.

Main Methods:

  • Electroencephalography (EEG) identified epileptiform foci in all patients.
  • Patients were divided into two groups: those with cerebral lesions and those without.

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  • Group 1 underwent lesion resection (with or without adjacent irritative zone removal); Group 2 underwent temporal lobectomy.
  • Imaging techniques included CT scan and MRI; electrocorticography guided resection in some cases.

    • Main Results:

    • The study included 14 males and 18 females, aged 9-62 years.
    • Eighteen patients with cerebral lesions (gliomas, AVMs, tumors) showed an 83.4% seizure-free rate post-surgery.
    • Fourteen patients without lesions, including those with mesial temporal sclerosis, had a 71.4% seizure-free rate.

    Conclusions:

    • Surgical resection of identifiable cerebral lesions in the temporal lobe offers a higher success rate for seizure control in intractable epilepsy.
    • Temporal lobectomy remains an effective option for patients without discrete lesions, particularly those with mesial temporal sclerosis.
    • Accurate pre-operative localization of the epileptiform focus is essential for optimizing surgical outcomes in epilepsy management.