Abstract
Three cases of multiple dural arteriovenous malformations (dAVM's) were reported in connection with occlusive dural sinus lesions. The first case was diagnosed as dAVM of the right cavernous sinus and it disappeared spontaneously 4 months from the onset of symptoms. After an interval of 4 months, another dAVM newly appeared in the right lateral sinus (transverse and sigmoid sinus) with occlusion of the right sigmoid sinus. With the second patient, multiple dAVM's were demonstrated on angiogram, one in the cavernous sinus and the other in the left lateral sinus. The last case had a dAVM in the posterior fossa. The transverse sinus was occluded several weeks after surgical intervention. The frequency of multi-occurrence and possible mechanisms of sinus occlusion are reviewed and discussed in this paper.
