Posterior reversible encephalopathy syndrome
Young woman presents with four episodes of convulsions.
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FLAIR sequences shows abnormal hyperintensity in the frontal, parietal and occipital subcortical regions.There is no diffusion restriction.No abnormal enhancement is seen on post contrast study.
MR vengography appears normal. No evidence of dural venous thrombosis.
This patient had undergone a caesarian section 3 days previously and was hypertensive.
The imaging features and clinical history are consistent with posterior reversible encephalopathy syndrome (PRES).