Disappearance of symptomatic generalized 3-Hz discharges after focal surgery in a patientwithtuberous sclerosis

Patients with tuberous sclerosis complex (TSC) usually present with epileptic spams and/or focal seizures and can be good candidates for epilepsy surgery [1]. Typical absence seizures (TAS) are generalized with sudden onset and termination, lasting a few seconds, and electrographically defined by a unique EEG signature: diffuse, regular, >2.5-Hz spike-and-wave discharges (SWD). Some data suggest a focal origin for thesegeneralized SWD, in particular, from themesial or polar aspects of the frontal lobe.