Male, 39 years old, with a progressive headache for seven months, progressive right exophthalmos, right chemosis and conjunctival edema, pulsatile tinnitus and carotid bruit in the right frontotemporal region. Cerebral magnetic nuclear angioresonance showed multiple anomalous vascular structures near the sphenoparietal sinus, pterygoid plexus, superior and inferior orbital fissures, all on the right, with swelling of the basilar plexus. A diagnostic cerebral and cervical arteriography was performed, which showed a high-output indirect Carotid-Cavernous Fistula (CCF), nourished mainly by multiple dysplastic dural branches originating from the mandibular and pterygopalatine segments of the internal maxillary artery and secondarily by the inferolateral trunk. There was hypertensive venous drainage anteriorly through the ecstatic superior and inferior ophthalmic veins, corresponding angular and facial veins, and posteriorly to both cavernous sinuses, basilar plexus, superior petrosal sinuses, and internal jugular veins (Type D, Barrow Classification). The patient underwent arterial embolization with hystoacril and lipiodol in branches of the right internal maxillary artery and venous embolization with platinum micro coils with occlusion of the fistula. He evolved well with the improvement of symptoms, being discharged from the hospital and scheduled for outpatient follow-up.