Tentorial dAVF: The Importance of Investigating Multiple Fistulas

For general information, operative indications, and preoperative considerations, please refer to the chapter on the Principles of Dural Arteriovenous Fistula Surgery.

If a dural arteriovenous fistula (dAVF) with cortical venous drainage offers no safe transarterial or transvenous access route, the fistula is addressed via microsurgical clip ligation. Examples of operative fistulas are ethmoidal, or anterior fossa and superior petrosal sinus or “tentorial” fistulas, which almost always demonstrate cortical venous drainage since they are not related to a functionally dominant venous sinus.

Diagnosis and Evaluation

Intracranial hemorrhage is the most common presentation. The subtype of infratentorial dAVFs that is suitabl...