Temporal lobe epilepsy in children: etiology in a cohort with new-onset seizures.

Abstract:

PURPOSE:The aim of this study was to characterize the incidence and etiology of temporal lobe epilepsy (TLE) in a community-based cohort of children with new-onset disease. METHODS:A community-based cohort of 30 children with TLE was studied. The patients had new-onset disease before age 14 years between 1995 and 1999. They underwent clinical, EEG, and magnetic resonance imaging investigations. RESULTS:The patients could be divided in three main groups according to likely etiology, as suggested by Harvey et al. (Neurology 1997;49:960-8). Group 1 consisted of eight (26.7%) children with malformations or long-standing, nonprogressive tumors (developmental TLE). Arachnoid cysts were found in three, dual pathology [cortical dysplasia and hippocampal sclerosis (HS)] in one, and focal cortical dysplasia with glioproliferative changes in one patient. Dysembryoplastic neuroepithelial tumor was responsible for the epilepsy in one, and ganglioglioma, in two children. Group 2 consisted of seven (23.3%) children with a significant antecedent and/or HS. Five children had a significant illness or event before the onset of TLE, including perinatal hypoxic-ischemic encephalopathy in one, encephalitis in one, traumatic brain injury in two, and complex febrile seizures in one. HS was found in the patients with traumatic brain injury and complex febrile seizures in the history in addition to two children without known antecedents. Group 3 comprised 15 (50%) children with no abnormality on neuroimaging and no significant antecedents (cryptogenic TLE). CONCLUSIONS:Etiologic differences between children with new-onset TLE may have prognostic implications: children with TLE and significant antecedents/HS are expected to have the greatest risk of continued seizures and psychological problems.

journal_name

Epilepsia

journal_title

Epilepsia

authors

Sztriha L,Gururaj AK,Bener A,Nork M

doi

10.1046/j.1528-1157.2002.24201.x

subject

Has Abstract

pub_date

2002-01-01 00:00:00

pages

75-80

issue

1

eissn

0013-9580

issn

1528-1167

journal_volume

43

pub_type

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