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      Traumatic Carotid Cavernous Fistula Resulting in Symptoms in the Ipsilateral Eye: A Case Report

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          Abstract

          Post-traumatic unilateral carotid cavernous fistula (CCF) with ipsilateral symptoms is a rare occurrence, so its diagnosis frequently gets overlooked for other more common conditions. Timely imaging with digital subtraction angiography (DSA) and appropriate vascular intervention is essential in preventing potentially serious sequelae in such cases. We describe a case of post-traumatic CCF in a 42-year-old man who experienced intermittent headaches and right eye redness, proptosis, and watery discharge for three months following the incident. He was diagnosed with a right CCF based on DSA. Timely endovascular embolization with the coiling method resulted in obvious relief of the ocular symptoms and an improved prognosis. This article offers a description of our patient, a brief discussion of the existing literature, the challenges of diagnosing such cases, and a variety of therapy options.

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          Classification and treatment of spontaneous carotid-cavernous sinus fistulas.

          G T Tindall, Saori I. Braun, S C Tindall … (1985)
          An anatomical-angiographic classification for carotid-cavernous sinus fistulas is introduced and a series of 14 patients with spontaneous carotid-cavernous sinus fistulas is reviewed to illustrate the usefulness of such a classification for patient evaluation and treatment. Fistulas are divided into four types: Type A are direct high-flow shunts between the internal carotid artery and the cavernous sinus; Type B are dural shunts between meningeal branches of the internal carotid artery and the cavernous sinus; Type C are dural shunts between meningeal branches of the external carotid artery and the cavernous sinus; and Type D are dural shunts between meningeal branches of both the internal and external carotid arteries and the cavernous sinus. The anatomy, clinical manifestations, angiographic evaluation, indications for therapy, and therapeutic options for spontaneous carotid-cavernous sinus fistulas are discussed.
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            Carotid-cavernous and orbital arteriovenous fistulas: ocular features, diagnostic and hemodynamic considerations in relation to visual impairment and morbidity.

            R Keizer (2003)
            The author investigated 101 cases with direct dural carotid-cavernous and orbital arteriovenous fistulas (CCF). The characteristic clinical findings, such as specific epibulbar arterialized loops, are described and the differential diagnosis of the striking diagnostic triad (exophthalmos, the above-mentioned loops and glaucoma) is discussed, together with the exclusion criteria for other causes of red eyes, episcleral measurements and blood flow. The results of various diagnostic procedures, such as ultrasonography, Doppler hematotachography and color Doppler of the orbit and carotid systems, magnetic resonance imaging and angiography, and of conservative treatment and embolization processes are dealt with successively. The classification of different types of carotid-cavernous fistulas is presented,(1-3) together with the clinical signs in relation to morbidity and mortality during or after conservative or intervention therapies. The importance of patient follow-up, in the clinic as well as with Doppler methods, is emphasized in order to differentiate a progressive or diminished clinical condition caused by spontaneous thrombosis in the healing process or more arteriovenous flow. A 'decision tree' for use in daily practice is provided. In this study, of the 101 cases in which the localization was diagnosed by angiography, 42 were direct (30 traumatic, 12 spontaneous), 31 were dural (3 traumatic, 28 spontaneous) and 10 were orbital CCFs. In 18 other cases, usually dural or orbital shunts, angiography was not performed. For the management of 42 direct fistulas, conservative treatment was used in 12 cases (7 with success; 58%) and balloon embolization was performed in 18 cases (17 with success; 94.5%); the other cases were treated by direct or indirect surgery. Of the 48 (spontaneous and traumatic) dural fistulas, 39 were treated conservatively (32 recovered or were much improved: 82%, of the total cases, 67%). All seven cases in which embolization was performed were cured and/or much improved. In two cases, one fistula was conservatively treated while one was embolized at another location, both with success. Of the 10 orbital arteriovenous shunts showing signs of dural fistulas, the features disappeared in 8 cases, although after a much longer follow-up period than for the typical dural carotid-cavernous sinus fistulas; in one patient, direct surgery was performed successfully and in one patient the original, non-progressive, orbital features could still be observed.
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              Carotid Cavernous Fistula: Ophthalmological Implications

              Imtiaz A. Chaudhry, Sahar Elkhamry, Waleed Al-Rashed … (2009)
              Carotid cavernous fistula (CCF) is an abnormal communication between the cavernous sinus and the carotid arterial system. A CCF can be due to a direct connection between the cavernous segment of the internal carotid artery and the cavernous sinus, or a communication between the cavernous sinus, and one or more meningeal branches of the internal carotid artery, external carotid artery or both. These fistulas may be divided into spontaneous or traumatic in relation to cause and direct or dural in relation to angiographic findings. The dural fistulas usually have low rates of arterial blood flow and may be difficult to diagnose without angiography. Patients with CCF may initially present to an ophthalmologist with decreased vision, conjunctival chemosis, external ophthalmoplegia and proptosis. Patients with CCF may have predisposing causes, which need to be elicited. Radiological features may be helpful in confirming the diagnosis and determining possible intervention. Patients with any associated visual impairment or ocular conditions, such as glaucoma, need to be identified and treated. Based on patient's signs and symptoms, timely intervention is mandatory to prevent morbidity or mortality. The conventional treatments include carotid ligation and embolization, with minimal significant morbidity or mortality. Ophthalmologist may be the first physician to encounter a patient with clinical manifestations of CCF, and this review article should help in understanding the clinical features of CCF, current diagnostic approach, usefulness of the available imaging modalities, possible modes of treatment and expected outcome.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Cureus
                Journal ID (iso-abbrev): Cureus
                Journal ID (issn): 2168-8184
                Title: Cureus
                Publisher: Cureus (Palo Alto (CA) )
                ISSN (Electronic): 2168-8184
                Publication date (Electronic, pub): 31 October 2022
                Publication date (Electronic, collection): October 2022
                Volume: 14
                Issue: 10
                Electronic Location Identifier: e30950
                Affiliations
                [1 ] Medicine, Lahore General Hospital, Lahore, PAK
                [2 ] Internal Medicine, Spartan Health Sciences University, Vieux Fort, LCA
                [3 ] Internal Medicine, California Institute of Behavioral Neurosciences and Psychology, Fairfield, USA
                [4 ] Internal Medicine, V.N. Karazin Kharkiv National University, Kharkiv, UKR
                [5 ] Interventional Neuroradiology, Lahore General Hospital, Lahore, PAK
                [6 ] Orthopaedic Surgery, Lahore General Hospital, Lahore , PAK
                Author notes
                Article
                DOI: 10.7759/cureus.30950
                PMC ID: 9713065
                PubMed ID: 36465727
                SO-VID: e2c93d3c-b2ce-49bc-8a44-7fa0de94dfe2
                Copyright © Copyright © 2022, Saleem et al.
                License:

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                Date accepted : 31 October 2022
                Categories
                Subject: Neurology
                Subject: Neurosurgery
                Subject: Trauma

                Keywords: carotid,carotid cavernous fistula,traumatic carotid cavernous fistula,trauma,ccf
                Data availability:
                Keywords: carotid, carotid cavernous fistula, traumatic carotid cavernous fistula, trauma, ccf

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