MRI of a 24 year-old SLE patient who presented with seizure. T2-weighted image (A) shows high signal lesions in deep and subcortical white matter bilaterally frontal and parietooccipital but predominantly posteriorly. Diffusion-weighted image (B) shows low-signal intensity area in corresponding lesion areas. Corresponding apparent diffusion coefficient (ADC) map (C) reveals high signal intensity area corresponding to low-signal area on diffusion-weighted image. Follow-up T2-weighted image (D) obtained 3 months after (A) shows complete resolution.