The authors have reported on 20 cases of cerebral venous thrombosis and reviewed the literature. In most of these 20 cases, CT scan findings were non-specific. Digital subtraction angiography was used for diagnosis in 6 cases. In 7 cases, no etiology was found. 12 patients received anticoagulant treatment despite CT scan showed hemorrhagic infarct in 4 of them. No neurological complication was reported after anticoagulation. Venous thrombosis was fatal in 3 non-anticoagulated patients. 4 others showed mild or severe sequellae after discharge.