Cerebral venous sinus thrombosis (CVST) and posterior reversible encephalopathy syndrome (PRES) are two rare diseases which may present with similar symptoms and signs. We report a case with coexisting PRES and CVST in a preeclamptic woman. A 24-year-old woman, G2 P1, at 33 wk and 5 d of pregnancy presented with headache. Her blood pressure was 180/120 mmHg and urinary test revealed +3proteinuria. Cesarean section was performed with indications of severe preeclampsia, intrauterine growth retardation and fetal distress. Cranial MR venography of the patient revealed thrombiin superior sagittal sinus, confluenssinuum, right transverse and right sigmoid sinus and diffusion MRI showed increased signal intensity (vasogenicoedema) in cortical and subcortical areas of parietooccipital and posterior frontal lobes.The patient was treated with magnesium sulfate and heparin successfully. After treatment period, control cranial MRI and diffusion MRI were normal. Thrombi within the sinuses were totally regressed. Albeit rare, these two diseases should be kept in mind especially in preeclamptic/eclamptic patients that present with neurological symptom and/or sign.
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