ANTERIOR CORPUS CALLOSOTOMY - EFFECTS IN A PATIENT WITH CONGENITAL BILATERAL PERISYLVIAN SYNDROME AND OROMOTOR SEIZURES

Anterior corpus callosotomy was performed in a patient with pseudobulb ar palsy, mild mental retardation and intractable epilepsy related to congenital bilateral perisylvian cortical dysplasia. Before surgery, s he had daily atonic drop attacks, rare and mainly sleep-related oromot or seizures, and multifocal and diffuse paroxysmal EEG discharges; aft er callosotomy, less abrupt atonic drop attacks recurred monthly and t he EEG epileptiform abnormalities disappeared. Video-EEG sleep recordi ngs revealed the clinically unsuspected serial recurrence of oromotor seizures, probably related to the clinically observed aggravation of d ysarthria. New surgical techniques, in addition or alternative to call osotomy, should be developed in order to avoid or reduce the risk of a ggravating some types of partial seizures in patients with bilateral c ortical displastic lesions, intractable epilepsy and epileptic falls.