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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...

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Frontal Disconnection for Treating Mild Malformation of Cortical Development with Oligodendroglial Hyperplasia in Epilepsy (MOGHE) in the Frontal Lobe
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Posterior cortex epilepsy: diagnostic considerations and surgical outcome.

Tao Yu1, Yuping Wang, Guojun Zhang

  • 1Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, China.

Seizure
|January 13, 2009
PubMed
Summary

Surgery effectively treats posterior cortex epilepsy (PCE). Accurate localization of the epileptogenic zone and eloquent cortex are crucial for successful outcomes, though pre-surgical evaluations do not predict success.

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Frontal Disconnection for Treating Mild Malformation of Cortical Development with Oligodendroglial Hyperplasia in Epilepsy (MOGHE) in the Frontal Lobe
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Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study
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Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study

Published on: August 15, 2025

Area of Science:

  • Neurology
  • Neurosurgery
  • Epileptology

Background:

  • Posterior cortex epilepsy (PCE) presents diagnostic challenges.
  • Pre-surgical evaluation aims to localize the epileptogenic zone for surgical planning.
  • Understanding the role of various diagnostic modalities is key to optimizing surgical outcomes in PCE.

Purpose of the Study:

  • To evaluate the effectiveness of pre-surgical diagnostic tools in posterior cortex epilepsy (PCE).
  • To assess the relationship between pre-surgical evaluations and surgical outcomes in PCE patients.
  • To identify key factors influencing successful surgical treatment for PCE.

Main Methods:

  • Retrospective analysis of 43 PCE patients undergoing surgery.
  • Diagnosis established using semiology, MRI, scalp video-EEG, and intracranial EEG monitoring.
  • Follow-up conducted over 1-5 years to assess surgical outcomes using Engel's classification.

Main Results:

  • 33 patients (76.7%) experienced auras; seizure types varied from simple motor to secondarily generalized tonic-clonic seizures.
  • Long-term neurological deficits were observed in some patients (visual field deficits in 8, transient deficits in 7).
  • 26 patients achieved excellent seizure control (Engel's Class I), with 7 patients experiencing Engel's Class IV-V outcomes. Malformation of cortical development was found in 41.9% of cases.

Conclusions:

  • Surgical intervention is a viable and effective treatment for posterior cortex epilepsy (PCE).
  • Precise identification of the epileptogenic zone and eloquent cortex are critical for favorable surgical results.
  • Current pre-surgical evaluation methods lack significant predictive value for surgical outcome in PCE.