“…In the literature, few patients (0-10%) become completely seizure free after callosotomy, although some seizure types are more favorable, especially those with drop attacks (tonic/atonic) [3,10,13,15,16,20,36,39], where seizure freedom from drop attacks is achieved in >60-80% of patients [4,8,12,13,20,24,40], or those with generalized tonic-clonic seizures, where seizure reduction is >50% [20]. A meta-analysis by Tellez-Zenteno et al [37 ]showed that >65% of patients with callosotomy experience a substantial reduction or complete elimination of disabling seizures [12,24,37].…”