Related Experiment Video

Updated: Jul 13, 2026

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
10:22

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy

Published on: December 6, 2016

[An infant with multiple cavernous angiomas presenting with frequent epileptic seizures - detection of epileptic

Jun Tohyama1, Noriyuki Akasaka, Naka Saito

  • 1Department of Pediatrics, Nishi-Niigata Chuo National Hospital. jtohyama@masa.go.jp

No to Hattatsu = Brain and Development
|July 18, 2007
PubMed

Insights

Early surgical removal of brain cavernous angiomas (CAs) can prevent further development of epileptic seizures in children. Magnetoencephalography (MEG) effectively identified the seizure focus and lesion in this case.

Area of Science:

  • Neurology
  • Neurosurgery
  • Pediatric Epilepsy

Background:

  • Cavernous angiomas (CAs) are vascular malformations that can cause epilepsy, particularly in pediatric patients.
  • Identifying the precise epileptogenic lesion is crucial for effective surgical planning in children with intractable seizures.

Observation:

  • A six-year-old girl presented with frequent partial seizures originating from a left parietal cavernous angioma (CA).
  • Diagnostic imaging including MRI, ictal SPECT, and magnetoencephalography (MEG) confirmed the CA as the epileptogenic focus.
  • The patient underwent successful lesionectomy of the left parietal CA at 19 months of age.

Findings:

  • Post-surgical follow-up showed the patient remained seizure-free for four years.
  • Postoperative MEG indicated the complete removal of interictal spikes, suggesting the elimination of the epileptogenic zone.
  • Early surgical intervention for CAs associated with epilepsy demonstrated significant efficacy.

Implications:

  • This case highlights the potential of early surgical intervention in managing pediatric epilepsy caused by cavernous angiomas.
  • Magnetoencephalography (MEG) is a valuable tool for precisely localizing epileptogenic zones and underlying lesions in infants with severe partial seizures.
  • Prompt treatment of CAs may prevent long-term neurological deficits and improve seizure control in affected children.

More Related Videos

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy09:57

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Published on: September 20, 2024

Application of an Amplitude-integrated EEG Monitor (Cerebral Function Monitor) to Neonates05:58

Application of an Amplitude-integrated EEG Monitor (Cerebral Function Monitor) to Neonates

Published on: September 6, 2017

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...
Epilepsy ll: Types01:22

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.
Seizures: Classification01:13

Seizures: Classification

Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Seizures l: Introduction01:20

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...