SINUS SKELETONIZATION - A TREATMENT FOR DURAL ARTERIOVENOUS-MALFORMATIONS OF THE TENTORIAL APEX - REPORT OF 2 CASES

Two cases of dural arteriovenous malformation of the tentorial apex ar e presented. Both were treated surgically by means of a sinus skeleton ization technique. The operative technique included a combined bioccip ital and median suboccipital craniotomy in which the posterior third o f the superior sagittal and the straight and bilateral transverse sinu ses were skeletonized by incising the fair and the tentorium along the sinuses. Endovascular embolization was used Drier to the surgical app roach in one case. Clinical and angiographic cure was achieved in both patients, with a follow up of 4 years in the first case and I year in the second one. The surgical technique is described in detail.