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Cerebral Sinus Venous Thrombosis in Two Patients with Spontaneous Intracranial Hypotension

We report 2 patients who had clinical and neuroimaging signs of spontaneous intracranial hypotension and who developed cerebral sinus venous thrombosis. This sequence of events – known after dural puncture but not in spontaneous intracranial hypotension – was suggested by the change in the pattern of headache, from a postural to a permanent and increasing one. The diagnostic and therapeutic difficulties that this complication raises are discussed.