[Thyrotoxicosis and cerebral venous sinus thrombosis, causality or chance alone?].

Cerebral sinus venous thrombosis is an uncommon cause of stroke. Three factors usually predispose to venous thrombosis: hypercoagulability states, venous stasis, and blood vessel wall changes.1--3 In patients with thyrotoxicosis, the increased activity of factor VIII,4 amongst others, results in a hypercoagulability state and has been reported as being a factor which predisposes to cerebral sinus venous thrombosis. Cases reported nloaded from http://www.elsevier.es, day 06/09/2017. This copy is for personal use. Any transmission of this document by any media or format is strictly prohibited.