Abstract
Positron emission tomography with fluorine-18 fluorodeoxyglucose ([18F]FDG-PET) usually shows ganglioglioma as hypometabolic, in the absence of malignant transformation or high grade. We report a case of benign ganglioglioma in the left precentral gyrus showing hypermetabolism on [18F]FDG-PET, which was associated with intractable focal motor seizures. An 11-year-old girl started having simple partial seizures refractory to anti-epileptogenic medication since 4 years of age. Magnetic resonance imaging revealed a tumorous lesion in the left precentral gyrus. Interictal [18F]FDG-PET showed high [18F]FDG uptake in the lesion. Gross total resection was carried out. The histological diagnosis was low-grade ganglioglioma. The hypermetabolism on [18F]FDG-PET may be associated with epileptogenic activity of the ganglioglioma.
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