A Practical Approach to Intracranial Dural Arteriovenous Fistulas: Pathogenesis, Classification and Management

Area of Science:

• Neurology
• Vascular Surgery
• Radiology

Background:

• Dural arteriovenous fistulas (dAVFs) are intracranial vascular anomalies with abnormal shunting in the dura mater.
• Etiology is often unclear, though trauma, surgery, and venous sinus issues are associated.
• Clinical presentation varies from benign headaches to aggressive hemorrhage risk due to retrograde venous drainage.

Purpose of the Study:

• To provide a comprehensive overview of dural arteriovenous fistula pathogenesis, classification, and angioarchitecture.
• To detail the endovascular management of dAVFs, including current and emerging techniques.
• To discuss the roles of microsurgery and stereotactic radiosurgery (SRS) in dAVF treatment.

Main Methods:

• Review of existing literature on dAVF pathogenesis, classification, and treatment modalities.
• Detailed appraisal of endovascular techniques, technical considerations, and lesion-specific strategies.
• Discussion of microsurgical and SRS approaches for dAVF management.

Main Results:

• Classification systems based on angioarchitecture and venous outflow aid risk stratification and treatment guidance.
• Endovascular embolization has become the first-line therapy for most dAVFs due to recent technique advancements.
• Microsurgery and SRS remain important treatment options for select dAVF cases.

Conclusions:

• Understanding dAVF angioarchitecture and venous drainage is crucial for predicting natural history and guiding treatment.
• Endovascular embolization represents a paradigm shift in dAVF management, offering effective first-line therapy.
• A multidisciplinary approach integrating endovascular, surgical, and radiosurgical techniques optimizes dAVF treatment outcomes.