Abstract
A 12-year-old Japanese girl with systemic lupus erythematosus is described. Positron emission tomography (PET) showed low attenuation in the right frontotemporal area at relapse, which disappeared at remission. Findings on electroencephalography coincided with those on PET. On x-ray CT there were no specific findings. The PET findings were thought to be due to cerebral vasculitis.
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