Minimally invasive neurosurgical access techniques to facilitate endovascular treatment of dural arteriovenous fistulae.

We report two cases of dural arteriovenous fistulae treated endovascularly, where percutaneous venous or arterial access was not suitable. In both cases, a different surgical access technique was used to allow transcranial cannulation of the appropriate venous sinus or of the varix to gain access and occlude the fistula.