MRI, Magnetoencephalography, and Surgical Outcome of Oligodendrocytosis versus Focal Cortical Dysplasia Type I
Autor: | Ayako Ochi, Yasushi Iimura, L.-N. Hazrati, James T. Rutka, Elysa Widjaja, Hiroshi Otsubo, D. Mata-Mbemba, O. C. Snead |
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Rok vydání: | 2018 |
Předmět: |
Male
0301 basic medicine Drug Resistant Epilepsy medicine.medical_specialty Adolescent medicine.medical_treatment Fluid-attenuated inversion recovery Extent of resection Pediatrics White matter 03 medical and health sciences 0302 clinical medicine Cortex (anatomy) medicine Humans Radiology Nuclear Medicine and imaging Child Retrospective Studies medicine.diagnostic_test business.industry Brain Magnetoencephalography Cortical dysplasia Hyperplasia medicine.disease Magnetic Resonance Imaging Hemispherectomy Malformations of Cortical Development Oligodendroglia Treatment Outcome 030104 developmental biology medicine.anatomical_structure Female Neurology (clinical) Radiology business 030217 neurology & neurosurgery |
Zdroj: | AJNR Am J Neuroradiol |
ISSN: | 1936-959X 0195-6108 |
DOI: | 10.3174/ajnr.a5877 |
Popis: | BACKGROUND AND PURPOSE: Abnormalities of oligodendrocytes have been reported in surgical specimens of patients with medically intractable epilepsy. The aim of this study was to compare the MR imaging, magnetoencephalography, and surgical outcome of children with oligodendrocytosis relative to focal cortical dysplasia I. MATERIALS AND METHODS: Oligodendrocytosis included oligodendroglial hyperplasia, oligodendrogliosis, and oligodendroglial-like cells in the white matter, gray matter, or both from children with medically intractable epilepsy. Focal cortical dysplasia I included radial and tangential cortical dyslamination. The MR imaging, magnetoencephalography, type of operation, location, and seizure outcome of oligodendrocytosis, focal cortical dysplasia I, and oligodendrocytosis + focal cortical dysplasia I were compared. RESULTS: Eighteen subjects (39.1%) had oligodendrocytosis, 21 (45.7%) had focal cortical dysplasia I, and 7 (15.2%) had oligodendrocytosis + focal cortical dysplasia I. There were no significant differences in the type of seizures, focal or nonfocal epileptiform discharges, magnetoencephalography, and MR imaging features, including high T1 signal in the cortex, high T2/FLAIR signal in the cortex or subcortical white matter, increased cortical thickness, blurring of the gray-white junction, or abnormal sulcation and gyration among those with oligodendrocytosis, focal cortical dysplasia I, or oligodendrocytosis + focal cortical dysplasia I (P > .01). There were no significant differences in the extent of resection (unilobar versus multilobar versus hemispherectomy), location of the operation (temporal versus extratemporal versus both), or seizure-free outcome of oligodendrocytosis, focal cortical dysplasia I, and oligodendrocytosis + focal cortical dysplasia I (P > .05). CONCLUSIONS: Oligodendrocytosis shared MR imaging and magnetoencephalography features with focal cortical dysplasia I, and multilobar resection was frequently required to achieve seizure freedom. In 15% of cases, concurrent oligodendrocytosis and focal cortical dysplasia I were identified. The findings suggest that oligodendrocytosis may represent a mild spectrum of malformations of cortical development. |
Databáze: | OpenAIRE |
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