Abstract
Introduction: This study aims to review the magnetic resonance imaging (MRI) aspects of a large series of patients with focal cortical dysplasia type II (FCD II) and attempt to identify distinctive features in the two histopathological subtypes IIa and IIb. Methods: We retrospectively reviewed the MRI scans of 118 patients with histological proven FCD IIa (n∈=∈37) or IIb (n∈=∈81) who were surgically treated for intractable epilepsy. Results: MRI was abnormal in 93 patients (79 %) and unremarkable in 25 (21 %). A dysplastic lesion was identified in 90 cases (97 %) and classified as FCD II in 83 and FCD non-II in seven cases. In three cases, the MRI diagnosis was other than FCD. There was a significant association between the presence of cortical thickening (p∈=∈0.002) and the transmantle sign (p∈
Original language | English |
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Pages (from-to) | 1065-1077 |
Number of pages | 13 |
Journal | Neuroradiology |
Volume | 54 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2012 |
Keywords
- Epilepsy
- Focal cortical dysplasia type IIa and IIb
- MRI imaging
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Clinical Neurology
- Cardiology and Cardiovascular Medicine