PMC5437792_01
Computer tomography and magnetic resonance imaging. (a) Noncontrast computer tomography, sagittal view. Lack of sulcal pattern, descended cerebellar tonsils, crowded craniocervical junction. (b) Noncontrast computer tomography, sagittal view post shunt insertion. Unchanged craniocervical junction. Effaced quadrigeminal cistern, fourth ventricle. (c) Axial T2-weighted magnetic resonance imaging (preoperative). (d and e) Axial fluid-attenuated inversion recovery sequences showing bilateral hyperintense signal change in parietooccipital lobes and cerebellar hemispheres consistent with posterior reversible encephalopathy syndrome
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F1
A repeat MRI scan of the brain shown in Figure 1 revealed a decompressed right lateral ventricle.