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 ORIGINAL ARTICLE
Year : 2009  |  Volume : 57  |  Issue : 1  |  Page : 50--54

D-dimer is useful in the diagnosis of cortical venous sinus thrombosis


Department of Neurology, Sanjay Gandhi PGIMS, Lucknow, India

Correspondence Address:
Usha K Misra
Department of Neurology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Raebareilly Road, Lucknow - 226 014
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.48822

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Background: Estimations of D-dimer correlate with deep vein thrombosis and pulmonary thromboembolism and may serve as a marker of cortical venous sinus thrombosis (CVST). Aim: To study the usefulness of D-dimer in the diagnosis of CVST. Materials and Methods: A total of 26 patients with CVST were subjected to a detailed medical history and neurological evaluation. A cranial MRI was carried out on a 1.5T scanner using T1, T2, and DWI sequences and two-dimensional time of flight MR venography. D-dimer was estimated using a rapid latex agglutination slide test using monoclonal antibodies. Results: The age of patients ranged between 16 and 70 years old (median 31 years old); 8 were males and were examined after a mean duration of 22 days of symptoms. Cortical venous thrombosis was attributed to puerperium in 4 patients, infection in 5 patients, and pregnancy, dehydration, insect bite, and migraine in 1 patient each. Superior sagittal sinus was involved in 15 patients, transverse sinus in 16 patients, straight sinus in 3 patients, sigmoid sinus in 7 patients, and cavernous and deep system in 1 patient each. A total of 12 patients had more than one sinus involvement. D-dimer was positive in 20 patients and correlated with the duration of symptoms but not with the extent of sinus thrombosis and the outcome. Conclusion: D-dimer is useful in patients suspected of CVST and patients with positive test results should be urgently sent for MR imaging.






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