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Focal cortical dysplasia type 2 (FLAIR and FDG-PET)

Left frontal focal cortical dysplasia type 2 with FLAIR hyperintensity (A) and corresponding FDG-PET hypometabolism (B). (Image from: Lee KK, Salamon N. [18F] fluorodeoxyglucose-positron-emission tomography and MR imaging coregistration for presurgical evaluation of medically refractory epilepsy. AJNR Am J Neuroradiol 2009;30:1811-6.)