• Qian Zhang, Xiao-Ling Xu, Ya-Li Sun, Zi-Wei Wang, Xian-Liang Lai, and Yu Xiong.
• Department of Ophthalmology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China.
• Medicine (Baltimore). 2021 Nov 19; 100 (46): e27892e27892.

RationaleCavernous sinus dural arteriovenous fistula (CSDAVF) is a rare intracranial vascular malformation. Because of its complicated clinical manifestations, it is easy to miss or misdiagnose CSDAVF.Patient ConcernsA 42-year-old female had chief complaint that the right eyeball had conjunctival congestion for half a year. She was given levofloxacin eye drops to treat the right eye with anti-inflammatory treatment, but the symptoms did not improve. Cranial magnetic resonance and cerebrovascular imaging showed that the right lateral rectus muscle was slightly enlarged, the right eyeball was prominent, but there was no abnormality in the brain.DiagnosesBased on clinical and imaging examinations and digital subtraction angiography (DSA), she was diagnosed as low-flow CSDAVF.InterventionsThe patient received interventional embolization with transvenous combined arterial approach using coils and Onyx liquid glue.OutcomesThe patient's exophthalmos and congestion symptoms were improved.ConclusionDAS is the gold standard for the diagnose of CSDAVF. Intravascular embolization interventional therapy is an effective treatment for CSDAVF.Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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