Benign rolandic epilepsy: clinical and electroencephalographic correlates

Area of Science:

• Neurology
• Epileptology
• Pediatric Neurology

Background:

• Benign rolandic epilepsy (BRE) is typically considered without structural brain abnormalities.
• An increasing number of BRE cases report associated organic lesions, challenging traditional classifications.
• This necessitates refined parameters for defining electrographic benignity in BRE.

Purpose of the Study:

• To investigate associations between interictal electroencephalographic (EEG) findings and clinical behavior in 60 BRE patients.
• To evaluate the relationship between neuroimaging results and both electrographic and clinical classifications of BRE.
• To identify specific electrographic parameters indicative of benignity in BRE.

Main Methods:

• Assessment of 60 Benign Rolandic Epilepsy (BRE) cases.
• Evaluation of four electrographic benignity parameters: paroxysm morphology, horizontal dipole, base rhythms, and laterality of rolandic spikes.
• Analysis of neuroimaging findings in relation to clinical and electrographic classifications.

Main Results:

• A statistically significant association was found between neuroimaging findings and electrographic/clinical classifications (sensitivity=73.5%, specificity=81.8%).
• Three electrographic parameters (paroxysm morphology, horizontal dipole, base rhythms) showed significant association with clinical classification.
• Electographically classified benign cases were 21 times more likely to be clinically classified as benign.

Conclusions:

• Interictal EEG findings, specifically paroxysm morphology, horizontal dipole, and base rhythms, are associated with clinical classification in BRE.
• Neuroimaging plays a role in classifying BRE, with significant diagnostic accuracy.
• These electrographic parameters offer valuable criteria for refining the definition of benignity in Benign Rolandic Epilepsy.