Dural Arteriovenous Fistula of the Cavernous Sinus Presenting with Progressive Venous Congestion of the Pons and Cerebrum: Report of one case

A 61-year-old woman with a left cavernous sinus dural arteriovenous fistula presented with left 6th nerve palsy. Initial brain MRI showed findings consistent with left-sided pontine infarction. Follow-up MRIs revealed an enlarged pontine lesion, and additional lesions in the right hippocampus, both basal ganglia and centrum semiovale mimicking a brain tumor or a demyelinating disease. We suggest that the MRI lesions are venous congestions caused by the shunting of blood flow from the left carotid artery into the venous system. (J Korean Neurol Assoc 19(5):520~525, 2001)