Does massive cerebral venous thrombosis mean poor outcome?

A 21-year-old woman taking oral contraceptives presented with headaches, nausea, vomiting and somnolence. The next day she had a generalized tonic-clonic seizure after which her neurologicalcondition deteriorated. CT and MRI showed multiple cerebral haemorrhages, while MR venography revealed extensive dural sinusand venous thrombosis involving almost all sinuses, great cerebral vein of Galen and internal cerebral veins. Two weeks after initiation of the anticoagulant treatment the patient recoveredcompletely with complete recanalization of all cerebral sinuses and veins. Although the patient had conditions which were indicative ofpoor outcome, her neurological deficit improved completely, which correlated with recanalizationof the thrombosed vessels.