ISOLATED CORTICAL VENOUS THROMBOSIS - DISCREPANCY BETWEEN CLINICAL-FEATURES AND NEURORADIOLOGIC FINDINGS - A CASE-REPORT

Isolated cortical venous thrombosis (CVT) is rare, and the discrepancy between clinical features and neuroradiologic findings has not been a dequately emphasized. A thirty-one-year-old woman presented with focal seizures and occasionally secondary generalization. There was no foca l neurologic deficit except for Todd's paralysis. Electroencephalograp hy showed intermittent theta waves at the left frontoparietal area. Br ain computed tomography (CT) and magnetic resonance imaging (MRI) disc losed a large lesion in the left frontoparietal area. An extensive occ lusion of the superior cerebral veins of the left hemisphere with a pa tency of the dural sinuses was noted in the cerebral angiography. Eigh t months later, the CT hypodense lesion disappeared. Her neurologic st atus was stationary, but the seizures, mostly focal, still occurred oc casionally. In this report, the authors emphasize the dissociation bet ween minor clinical features and larger CT and MRI lesions in isolated CVT.