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Fig. 3B —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. Bilateral edema is present on
FLAIR MR image in 54-year-old woman, involving brainstem and cerebellum
(A) and diffusely involving basal ganglia (B). Diffuse sulcal
hyperintensity is presumed to be hemorrhage.