Comparison of clinical features and surgical outcome in focal cortical dysplasia type 1 and type 2.

Abstract:

INTRODUCTION:Recent ILAE classification defined focal cortical dysplasia (FCD) patients with accompanying epileptic lesions as a separate group. We investigated data of patients with sole FCD lesions regarding long-term seizure outcome and different characteristics of FCD type 1 and type 2 patients. METHODS:Eighty children and adult patients underwent surgery for FCD were included to the analysis of factors differentiating FCD type 1 and type 2 groups and their effect on long-term outcome. RESULTS:FCD type 2 patients had earlier epilepsy onset (8.1 vs. 6.1 years. p=0.019) and underwent surgery younger than type 1 (18.2 vs. 23.7 years. p=0.034). FCD type 2 patients were more prominently MR positive (77.8% vs. 53.8%. p=0.029), which increased within FCD type 2 group as patients become younger (p=0.028). FCD Type 1 lesions showed mostly multilobar extension and FCD type 2 mostly located in frontal lobe. Seizure freedom was achieved in 65.4% of FCD type 1 patients and 70.4% of FCD type 2 patients. Seven patients had permanent de novo neurological deficits. Mean follow-up time was 5.5 years (Range: 1-11 years). CONCLUSION:Surgical intervention in carefully selected patients may facilitate favorable seizure outcome leading to better quality of life. FCD type 1 and type 2 groups present with evident differences, which may promote medical and surgical management of these pathologies.

journal_name

Epilepsy Res

journal_title

Epilepsy research

authors

Isler C,Kucukyuruk B,Ozkara C,Gunduz A,Is M,Tanriverdi T,Comunoglu N,Oz B,Uzan M

doi

10.1016/j.eplepsyres.2017.08.008

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

130-136

eissn

0920-1211

issn

1872-6844

pii

S0920-1211(17)30218-8

journal_volume

136

pub_type

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