[A case of benign epilepsy of children with centro-temporal EEG foci with multiple arachnoid cysts].

An 8-year-old boy with benign epilepsy of children with centro-temporal EEG foci (BECCT) with multiple arachnoid cysts was reported. He had febrile convulsions 3 times, for a few minutes each time, at the age of 7 months, and thereafter had generalized tonic-clonic convulsions of 2 minute duration twice in 2 days without fever. EEG showed spike & wave complexes predominantly in the right central area. CT revealed arachnoid cysts in the right temporal lobe and cerebellar hemisphere, and left frontal and central sulci. He has been treated with carbamazepine without neurosurgical operation for the arachnoid cysts, and no seizure has occurred besides a single episode at the age of 3 years. Only 3 cases of BECCT with arachnoid cysts have been reported in the literature. Two of these cases underwent neurosurgical operations for arachnoid cysts, but the operations led to improvement in neither the clinical course nor EEG findings. It is suggested that arachnoid cysts do not lead to poorer prognosis in a patient with BECCT.