Abordaje directo de la malformación arteriovenosa dural tipo fístula carotidocavernosa. Presentación de un caso y revisión de la literatura

Summary. Objectives. Barrow’s D-type carotid-cavernosa fistula (FCC) with progressive symptoms and in whom endovascular procedures have failed meet criteria for a direct approach. We report a case of this type of vascular lesion in whom partial endovascular embolization was done together with a direct approach to the FCC, using a method of localization involving a transoperative imaging guide. Digital subtraction angiography and Estereoflex stereotactic system was used. Patients and methods. A female patient had had a previous minor head injury. She had a progressive neurological disorder with marked visual defect, and had been diagnosed on angiography as having FCC with afferents from branches of the internal carotid artery (ACI) and external carotid artery (ACE). After failure of endovascular treatment orbito-zygomatic craniotomy was done with extraintradural dissection and exposure of the antero-lateral triangle of the cavernous sinus (SC). The fistula was closed completely by anterior packing with the venous component. Transoperative stereotactic angiographic checks were done to localize and control the packing. Conclusions. The Barrow’s type D FCC in which embolization treatment has failed may be treated using a direct approach to the anterolateral triangle of the SC. The AC1 remained permeable, fistula was occluded and there was minimal morbidity. [REV NEUROL 2002; 34: 204-7]