Related Experiment Video
Updated: Sep 13, 2025

Catheter-based Endovascular Angioplasty for Fibrosing Mediastinitis-associated Pulmonary Vein Stenosis
Published on: August 26, 2025
Paradoxical worsening phenomenon in a patient presenting with carotid cavernous sinus fistula
Adib Bin Amir1, Chan Ping Kiat2, Noor Hasmira Binti Bismi2
1Radiology, Hospital Sultanah Bahiyah, Alor Setar, Kedah, Malaysia adibamir0@gmail.com.
Abstract:
Paradoxical worsening phenomenon is a rare event following the treatment of carotid cavernous sinus fistula (CCF). In the present case, a late adolescent male presenting with left eye redness and proptosis was found to have an indirect left CCF. Two days after successful embolisation of the fistula, the patient developed clinical deterioration of the left eye. The patient was treated conservatively, and his symptoms subsided after 1 week. The transient worsening of symptoms following treatment was likely due to rapid thrombosis within the cavernous sinus and superior ophthalmic vein.
Related Concept Videos
Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
Disorders of the Autonomic Nervous System
Raynaud's disease, also known as Raynaud's...
Measurement of Blood Pressure
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Heart Failure III: Clinical Manifestations
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
