18F-Fluorodeoxyglucose Positron Emission Tomography–Computed Tomography/Magnetic Resonance Imaging in Neurosarcoidosis

A 41-year-old lady presented with headache and ophthalmoplegia of the left eye for 1 week and underwent magnetic resonance imaging (MRI) of the brain, which showed homogeneously enhancing nodular thickening of meninges in the left anterior and middle cranial fossa with perilesional white matter edema of the left fronto-temporal lobes which appeared suspicious for neurosarcoidosis. She subsequently underwent 18F-fluorodeoxyglucose positron emission tomography–computed tomography (18F-FDG PET/CT) to determine the disease extent and to target the optimal biopsy site. Coregistration of 18F-FDG PET–CT brain to MRI was done for better characterization of the brain lesions.