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Intracranial venous drainage through spinal veins
Delaware Medical Journal
|August 22, 2014
Summary
Intracranial venous sinus thrombosis can reroute blood flow through spinal veins. This unusual venous drainage pattern requires consideration in diagnosing spinal arteriovenous malformations.
Area of Science:
- Neurology
- Vascular Anatomy
- Radiology
Background:
- The brain and spine exhibit extensive venous collateral networking.
- Intracranial blood outflow pathways can adapt to obstructions.
Observation:
- A case presented with intracranial blood predominantly draining via enlarged spinal venous collaterals.
- This occurred secondary to thrombosis of the intracranial venous sinuses.
Findings:
- Demonstrated an unusual pattern of cranial venous drainage.
- Highlighted the significant role of spinal venous collaterals in intracranial outflow.
Implications:
- This venous drainage pattern is crucial for diagnosing spinal arteriovenous malformations (AVM) and fistulas (AVF).
- Magnetic Resonance Venography (MRV) is recommended to rule out intracranial thrombosis in such cases.
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