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J Neurol Surg A Cent Eur Neurosurg 2023; 84(05): 483-488
DOI: 10.1055/s-0041-1741547
Technical Note

Onyx Embolization of an Indirect Carotid–Cavernous Fistula with Cortical Venous Reflux: Technical Note

Juan Felipe Abaunza-Camacho 
1   Department of Neurosurgery, Center for Research and Training in Neurosurgery (CIEN), Samaritana University Hospital, Bogotá, Colombia
2   Rosario University School of Medicine, Bogotá, Colombia
,
David Vergara-Garcia 
1   Department of Neurosurgery, Center for Research and Training in Neurosurgery (CIEN), Samaritana University Hospital, Bogotá, Colombia
2   Rosario University School of Medicine, Bogotá, Colombia
,
Humberto Madrinan-Navia
1   Department of Neurosurgery, Center for Research and Training in Neurosurgery (CIEN), Samaritana University Hospital, Bogotá, Colombia
2   Rosario University School of Medicine, Bogotá, Colombia
,
William Mauricio Riveros
1   Department of Neurosurgery, Center for Research and Training in Neurosurgery (CIEN), Samaritana University Hospital, Bogotá, Colombia
2   Rosario University School of Medicine, Bogotá, Colombia
,
Alberto Caballero
1   Department of Neurosurgery, Center for Research and Training in Neurosurgery (CIEN), Samaritana University Hospital, Bogotá, Colombia
2   Rosario University School of Medicine, Bogotá, Colombia
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Abstract

Background Indirect carotid–cavernous fistulas (iCCFs) are shunts between meningeal branches of the internal carotid and/or the external carotid arteries and the cavernous sinus. They account for 83% of all carotid–cavernous fistulas (CCFs). Symptomatic iCCFs and those with increased risk of hemorrhage should be treated. Transvenous endovascular treatment is the preferred treatment modality. However, in complex cases, a combination of transarterial and transvenous approaches (multimodal treatment) is required.

Methods A middle-aged woman presented with signs of increased intraocular pressure, blurry vision, diplopia, left proptosis, chemosis, conjunctival injection, ptosis, and cranial nerve VI palsy. Imaging confirmed the presence of a Barrow type D and Thomas type 4 iCCF with cortical venous reflux (CVR).

Results The patient underwent transarterial and transvenous onyx embolization of the shunt, achieving a complete obliteration of the fistula. No complications occurred and the patient had a satisfactory postprocedural evolution.

Conclusion Multimodal onyx embolization is an effective option for the treatment of a complex symptomatic iCCF. If CVR is identified, these lesions should be promptly treated to prevent hemorrhage secondary to rupture.

Keywords

carotid–cavernous fistula - cavernous sinus - onyx embolization - cortical venous reflux


Publication History

Received: 04 February 2021

Accepted: 01 November 2021

Article published online:
24 January 2022

© 2022. Thieme. All rights reserved.

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