Reversible Confluent Deep White Matter Abnormalities: A New Variant of Posterior Reversible Encephalopathy Syndrome

Figure 1

MRI findings at initial presentation (upper row) and follow-up (lower row). (a)-(b) Axial FLAIR images, taken at the levels of the hippocampi, mid lateral ventricles, and centrum semiovale, demonstrate confluent areas of abnormal high signal in the deep white matter with sparing of the subcortical white matter and overlying cortex. (d)-(e) Axial FLAIR images, at similar levels to (a)-(b), demonstrate marked decrease in the abnormal signal in the cerebral white matter. (c) shows small areas of restricted diffusion in the left greater than right medial parietal and bilateral frontal lobes, with apparent diffusion coefficient (ADC) correlation (f).