Female, 16 years old, with diagnosis of PRES, lupus, with altered mental status and seizures, on steroid treatment. Previously seen areas of cortical and subcortical T2 hyperintensity along the cerebral watershed zones and the occipitotemporal regions have completely or nearly completely resolved. A few scattered foci of periventricular T2 hyperintensity are seen, along with mild T2 cuffing of the ventricular atria. No diffusion restriction is seen. No evidence of significant parenchymal edema or mass effect is detected. There are no findings to indicate acute or chronic intracranial hemorrhage. Ventricular size and morphology are stable. No pathologic intracranial enhancement is detected.
Complete or near complete resolution of scattered cortical and subcortical signal abnormality which was compatible with PRES. Small areas of residual periventricular signal abnormality may reflect pre-existing chronic lesions perhaps related to the patient's diagnosis of lupus.