• Brenda Iglesias, Marcos Ezequiel Yasuda, Daniela Renedo, Daniel Weil, Ignacio Racana, Javier Goland, and Silvia Garbugino.
• Department of Neurosurgery, Hospital de Clinicas "Jose de San Martin," University of Buenos Aires School of Medicine, City of Buenos Aires, Buenos Aires, Argentina. Electronic address: breniglesias.bi@gmail.com.
• World Neurosurg. 2021 Jul 1; 151: 1.

AbstractThe cavernous sinus area is the second most common location for intracranial dural fistulas. Although these spontaneous dural cavernous fistulas are self-limited, a sizeable number of patients will develop progressive vision loss, diplopia, or intractable glaucoma, which warrant interventional therapy.1,2 We present the case of a 54-year-old male with hypertension and type 2 diabetes, who presented with a red right eye associated with progressive exophthalmos, ophthalmoparesis, and deterioration of visual acuity. The angiotomography showed the exophthalmos with an ingurgitated superior ophthalmic vein, with early filling in the arterial phase. A digital angiography was made, and a diagnosis of dural cavernous fistula, Barrow type D was made.3 Considering several transvenous approaches, alternatives included inferior petrosal sinus, access through the superior ophthalmic vein, and an open approach.4 In this particular case the inferior petrosal sinus was not present, so we tried to catheterize through the facial vein and also puncture the ophthalmic vein. Both procedures were unsuccessful. We decided to perform, then, an open approach with the oculoplastic surgery team (Video 1). Through an eyelid dissection, we localized the superior ophthalmic vein and then canalized it by direct visualization.5 With this approach, we were able to perform the cavernous sinus packing with coils and achieved a complete occlusion of the fistula. We reproduced the direct approach to the superior ophthalmic vein in a cadaveric specimen and schematized it step by step with 3-dimensional photographs.6.Copyright © 2021 Elsevier Inc. All rights reserved.

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