Document Detail

MRI and EEG as long-term seizure outcome predictors in familial mesial temporal lobe epilepsy.
MedLine Citation:
PMID:  23197748     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To evaluate the natural history and outcome predictors in familial mesial temporal lobe epilepsy (FMTLE). METHODS: We conducted a longitudinal study of 103 individuals from 17 FMTLE families (mean follow-up: 7.6 years). We divided subjects into 3 groups: FMTLE (n = 53), unclassified seizure (n = 18), and asymptomatics (n = 32). We divided FMTLE patients into 3 subgroups: seizure-free (n = 19), infrequent (n = 17) seizures, and frequent (n = 17) seizures and further reclassified them into favorable and poor outcome. We defined hippocampal atrophy (HA) by visual MRI analysis and performed volumetry in those who had 2 MRIs. RESULTS: FMTLE patients with infrequent seizures evolved to either frequent seizures (17.6%) or seizure freedom (23.5%). In the seizure-free group, most remained seizure-free and 21% developed infrequent seizures. All patients with frequent seizures remained in the same status or underwent surgery. Twelve percent of the asymptomatics and 22% of the unclassified-seizure group evolved to FMTLE with infrequent seizures. Predictive factors of poor outcome were presence of HA (p = 0.0192) and interictal epileptiform discharges (p = 0.0174). The relationship between initial precipitating incidents and clinical outcome was not significant although a tendency was observed (p = 0.055). Use of antiepileptic drugs and secondary generalized seizures during the patient's lifetime did not predict poor outcome. We observed progression of HA only in the group with frequent seizures. CONCLUSION: Most patients with FMTLE continued in the same clinical status. However, patients with frequent seizures had progression of HA and none improved except those who underwent surgery. Interictal epileptiform discharges and HA predicted poorer outcome in FMTLE, and there was a tendency in favor of initial precipitating incidents as outcome predictors.
Marcia E Morita; Clarissa Lin Yasuda; Luiz E Betting; Denise Pacagnella; Livia Conz; Patricia Horn Barbosa; Claudia Vianna Maurer-Morelli; Andre Luiz F Costa; Eliane Kobayashi; Iscia Lopes-Cendes; Fernando Cendes
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-28
Journal Detail:
Title:  Neurology     Volume:  -     ISSN:  1526-632X     ISO Abbreviation:  Neurology     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401060     Medline TA:  Neurology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
From the Neuroimaging Laboratory (M.E.M., C.L.Y., L.B., D.P., P.H.B., A.L.F.C., E.K., F.C.), Department of Neurology (M.E.M., C.L.Y., L.B., P.H.B., E.K., F.C.), Faculty of Medical Sciences (L.C.), and Department of Medical Genetics (C.V.M.-M., I.L.-C.), UNICAMP (University of Campinas), Brazil. E.K. is currently affiliated with the Department of Neurology & Neurosurgery, Montreal Neurological Institute, McGill University, Canada.
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