MULTIPLE SUBPIAL TRANSECTION - REPORT OF 7 CASES

7 cases of pure multiple subpial transection (MST) without associated cortical resection, for treatment of pharmaco-resistant partial epilep sy localized in highly functionnal cortical area, are reported. The tr ansections were performed following the technique described by Morrell . The follow-up period ranged from 1 to 4 years, MST induced no signif icant neurological handicap: only 2 patients experiencing a transitory sensory-motor deficit and with total recovery within 1 month, With re spect to seizures, 5 patients were improved with a decrease in seizure frequency of 100, 95, 75, 60 and 40%, respectively, Complex partial s eizures changed postoperatively into simple partial seizures in 1 case . In conclusion, this procedure seems to be adequate, although no stat istically significant results are available at this time. in our serie s, we believe failures could be attributed either to a very restricted area of transection or to an incorrect delimitation of the epileptic focus.