“…As in extracranial venous thrombosis heparin treatment is widely used for the therapy and prevention of fresh thrombosis of cerebral veins and venous sinuses [1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]and the results of several retrospective analyses and case reports suggest beneficial effects of heparin [4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26]. However, to date the only randomized placebo-controlled data on heparin treatment in CSVT derive from a study which had to be terminated after an interim analysis of 20 patients because of the significant advantage of heparin [10].…”