Annals of Indian Academy of Neurology
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Year : 2003  |  Volume : 6  |  Issue : 1  |  Page : 7-12

Non-gestational Cerebral Venous Thrombosis A Study Of 49 Cases

Correspondence Address:
V R Tharaknath

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The clinical land neuroimaging features of 49 patients with non-gestational cerebral venous thrombosis encountered over a period of two years are described here. The age at presentation ranged from nine to forty-eight years (mean 21.4 years). Sex ratio (M: F) was 1:1.04. The commonest symptoms were headache (100%), vomiting (61.2%) and convulsions (34.7%). the duration of symptoms varied from three to fifteen days in 59.2% of patients. Headache was diffuse in 51%, occipital in 18.4% and bifrontal in 14.3%. Fourteen (82.4%) out of the 17 patients with seizures had generalized seizures. The commonest focal deficit was hemiparesis. Seven patients had history of oral contraceptive intake. CT scan was normal in 12 patients (24.5%). Infarcts were noted in 24.5% of patients. MRI was done in all patients with normal CT (12 patients) and in some with abnormal CT (17 patients). MRI was also normal in three patients, where the diagnosis was by MR venogram. The superior sagittal sinus was the most commonly involved sinus. Non-gestational CVT needs a high index of clinical suspicion for diagnosis. It can present with protean clinical manifestations. As CT scan can be normal in upto 25% of patients, the investigation of choice is MRI, with MR venography for analyzing the extent of the disease.

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