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Fig. 3C —Two patients with severe posterior reversible encephalopathy syndrome (PRES), both related to hypertension. Both cases involved cerebellum. Repeat MRI after several weeks (not shown) showed marked improvement in both patients, with no ensuing encephalomalacia. In another pateint, a 25-year-old woman, bilateral diffuse edema extends from cortex to ventricular margin on FLAIR MR image.