Temporal pole signal abnormality on MR imaging in temporal lobe epilepsy with hippocampal sclerosis: a fluid-attenuated inversion-recovery study

Arquivos de Neuro-Psiquiatria

Henrique Carrete Junior²  Nitamar Abdala¹  Kátia Lin¹  Luís Otávio Caboclo¹  Ricardo Silva Centeno¹  Américo Ceiki Sakamoto¹  Jacob Szjenfeld¹  Roberto Gomes Nogueira¹  Elza Márcia Targas Yacubian¹ 

[1] ,Universidade Federal de São Paulo Escola Paulista de Medicina Departamento de Diagnóstico por ImagemSão Paulo SP ,Brasil

关键词: epilepsy;    temporal lobe epilepsy;    hippocampal sclerosis;    temporal pole;    magnetic resonance imaging;    epilepsia;    epilepsia do lobo temporal;    esclerose hipocampal;    pólo temporal;    ressonância magnética;   

DOI  :  10.1590/S0004-282X2007000400001

来源: SciELO

【 摘 要 】

OBJECTIVE: To determine the frequency and regional involvement of temporal pole signal abnormality (TPA) in patients with hippocampal sclerosis (HS) using fluid-attenuated inversion-recovery (FLAIR) MR imaging, and to correlate this feature with history. METHOD: Coronal FLAIR images of the temporal pole were assessed in 120 patients with HS and in 30 normal subjects, to evaluate gray-white matter demarcation. RESULTS: Ninety (75%) of 120 patients had associated TPA. The HS side made difference regarding the presence of TPA, with a left side prevalence (p=0.04, chi2 test). The anteromedial zone of temporal pole was affected in 27 (30%) out of 90 patients. In 63 (70%) patients the lateral zone were also affected. Patients with TPA were younger at seizure onset (p=0.018), but without association with duration of epilepsy. CONCLUSION: Our FLAIR study show temporal pole signal abnormality in 3/4 of patients with HS, mainly seen on the anteromedial region, with a larger prevalence when the left hippocampus was involved.

【 授权许可】

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