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VOLUME 95 , ISSUE 5E ( September-October, 2021 ) > List of Articles

CLINICAL CASE

Carotid-cavernous fistula, report of a difficult case

Sara Chica-Calderón, María E. González-Alviar, Sergio Vargas-Vélez

Keywords : Exophthalmos, Carotid-cavernous sinus fistula, Conjunctivitis

Citation Information : Chica-Calderón S, González-Alviar ME, Vargas-Vélez S. Carotid-cavernous fistula, report of a difficult case. 2021; 95 (5E):214-218.

DOI: 10.24875/RMOE.M21000184

License: CC BY-NC-ND 4.0

Published Online: 01-09-2021

Copyright Statement:  Copyright © 2020 Sociedad Mexicana de Oftalmología. Published by Permanyer


Abstract

We present the case of a 64-year-old female patient with a 7-month history of nonspecific symptoms of diplopia and unilateral proptosis. On physical examination there was a marked limitation of the abduction of the lateral rectus muscle, but magnetic resonance imaging (MRI) showed thickening of the medial rectus. An initial diagnosis of dysthyroid ophthalmopathy was made by a neuroradiologist. Despite treatment, there was no improvement of symptoms so a new evaluation of the MRI was requested, finding signs of a carotid-cavernous fistula. The diagnosis of proptosis is a challenge in ophthalmology. Usually, it is caused by dysthyroid ophthalmopathy; however, other diagnoses should be considered in patients with unusual signs and no improvement with standard treatment.

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