Left-Right Brain Mystery in a Child With a Focal Cortical Lesion

Abstract

Focal cortical brain lesions cause perilesional EEG abnormalities and ipsilateral epileptiform discharges. The seizure semiology due to a brain structural abnormality depends on the epileptogenic network involved. Concordant ictal semiology, EEG ictal onset, and ipsilateral interictal epileptiform discharges are favorable prognostic factors for surgical candidacy in patients with focal MRI lesions.1 Conversely, patients with discordant imaging and neurophysiologic evaluations pose management challenges in determining surgical candidacy.