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Carotid cavernous fistula: Redefining the angioarchitecture
Keshav Mishra1, Vivek Kumar2, Vinay3
1Fellow Skull Based Surgeon, PGIMER Chandigarh, Haryana, India.
Insights
The API-ACE classification provides a comprehensive understanding of carotid cavernous fistula (CCF) angioarchitecture, aiding in better clinical manifestation assessment and endovascular treatment planning.
Area of Science:
- Vascular Surgery
- Neuroradiology
- Interventional Neurology
Background:
- Existing carotid cavernous fistula (CCF) classifications offer incomplete descriptions, lacking integration of clinical features, natural history, and detailed vascular architecture.
- A comprehensive classification system is needed to fully characterize CCF and guide treatment strategies.
Purpose of the Study:
- To evaluate the utility of the proposed API-ACE classification for carotid cavernous fistula (CCF).
- To assess the classification's ability to correlate angioarchitecture with clinical presentation and guide endovascular treatment selection.
Main Methods:
- Retrospective review of clinical and radiological data for 28 patients diagnosed with CCF.
- Classification of CCF using the proposed API-ACE system alongside the Barrow and Thomas classifications.
Main Results:
- 89.2% of CCF cases were associated with head injury; orbital symptoms were the most frequent presentation.
- Barrow type A was the predominant subtype (n=24), with most patients (n=23) showing reduced ipsilateral carotid filling.
- Combined anterior and posterior drainage patterns were most common, with anterior drainage more frequent than posterior.
Conclusions:
- The API-ACE classification offers a superior framework for understanding CCF angioarchitecture.
- This classification aids in comprehending clinical manifestations and optimizing endovascular treatment approaches for CCF.
Objective:
Numerous classification schemes have been used for carotid cavernous fistula (CCF), each describing some aspect of the disease process but none of them provides a complete description of the fistula including its clinical features, natural history, arterial and venous architecture.
Methods:
Retrospective clinical and radiological review was done for all the patients diagnosed with CCF and treated at our institute. The CCF were classified according to the proposed API-ACE classification along with Barrow and Thomas classification.
Results:
Overall 28 patients (M=21, F=7) were diagnosed and treated during the 6-year period. 89.2% of CCF developed following an episode of head injury. Orbital symptoms were the most common presenting complaints. Barrows type A was the most predominant subtype (n=24) and most of the patients (n=23) demonstrated decreased ipsilateral carotid filling. Combined anterior and posterior drainage pattern was the most common drainage pattern and anterior drainage was more commonly observed than posterior drainage.
Conclusions:
API-ACE classification helps to better understand and classify the angioarchitecture of CCF which could help better understand the clinical manifestations and guide in appropriate endovascular approach selection for treatment.
