New Development of a Dural Arteriovenous Fistula (AVF) of the Superior Sagittal Sinus after Transvenous Embolization of a Left Sigmoid Sinus Dural AVF. Case Report and Review of the Literature.

Transvenous occlusion of an affected sinus has become a standardized curative treatment for dural sinus arteriovenous fistula. A 57-yearold man with a left sigmoid sinus isolated dural AVF was successfully treated with tansarterial followed by transvenous embolization. Followup angiography one year and two months thereafter showed complete disappearance of the dural AVF. However, one year later, superior parasagittal sinus dural arteriovenous fistula had newly developed, for which the etiology and a careful point for follow-up are here discussed.