Clinical Neuroscience

[Experiences of surgically treated temporal epileptic patients - multicentre study ]

BALOGH Atilla1, BORBÉLY Katalin2, CZIRJÁK Sándor3, HALÁSZ Péter4, JUHOS Vera1, KENÉZ József2, VAJDA János3

JULY 20, 1997

Clinical Neuroscience - 1997;50(07-08)

[Our experiences on surgically treated temporal lobe epileptic patients are presented. Involved in the disease are the process of preoperative investigations, clinical data, types of operation and their indications, and the postoperative controls. Pre- and postoperative data of 36 surgically treated, intractable temporal lobe epileptic patients were analysed. A postoperative follow-up of longer than two years was carried out on 24 patients. The experiences of these patients on postoperative seizure frequency were evaluated using Engel's classification. Among these 24 temporal lobe epileptic patients 19 are seizure free (Engel I.), the seizure frequency significantly decreased in 3 of them (Engel II.), in the case of 2 patients the number of seizures was reduced (Engel III.). Our experiences show that neurosurgical investigation seems to be an increasingly useful, alternative way for treating intractable temporal lobe epileptic patients.]


  1. Fővárosi Szent István Kórház II. Neurológiai Osztály
  2. Nemzetközi Egészségügyi Központ
  3. Országos Idegsebészeti Tudományos Intézet
  4. OPNI-HIETE Epilepszia Centrum, OPNI Radiológiai Részleg, Budapest



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Clinical Neuroscience



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Clinical Neuroscience



[Objectives - To present evidence of changes in seizure semiology suggesting late contralateral epileptogenesis after incomplete surgery in a patient with temporal lobe epilepsy. Methods - The presently 36 year old female patient was followed across 18 years by clinical observation and EEG, and video-EEG monitored before and 18 years after surgery. Results - The patient had complex partial seizures defined by video-EEG which started from the right temporal lobe with an ictal spread to the contralateral (left) temporal lobe. After right amygdalo-hippocampectomy she did not become seizure free. Years after surgery a new type of seizure emerged. Video-EEG monitoring 18 yrs after surgery revealed two seizure types. One started in the right temporal region clinically resembling to the earlier seizures. The new seizure type showed left sided electroclinical pattern. The postoperative MRI detected bilateral hippocampal sclerosis. Side specific memory tasks revealed bilateral hippocampal dysfunctions with subdominant (right) side predominance. Conclusions - The well documented evolution from unilateral to bilateral seizures suggests late contralateral epileptogenesis in which the persisting seizure spread from the primary epileptogenic side and/or the earlier silent contralateral hippocampal sclerosis (HS) may play role. This case show that progressive changes with bilateral involvement may occur during the course of chronic temporal lobe epilepsy.]