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[Spinal dural AVM--report of three cases].
No Shinkei Geka. Neurological Surgery
|March 1, 1986
Summary
A novel spinal dural arteriovenous malformation (AVM) in older males presents with progressive ischemic symptoms. Embolization is the recommended primary treatment for this distinct dural AVM type.
Area of Science:
- Neurology
- Vascular Surgery
- Radiology
Background:
- Spinal arteriovenous malformations (AVMs) are complex vascular lesions.
- Distinguishing between different subtypes of spinal AVMs is crucial for effective treatment.
- Previous classifications have not fully captured a specific dural AVM presentation.
Observation:
- A new type of spinal AVM characterized by specific demographic and clinical features has been identified.
- Patients are exclusively male, over 50 years old, presenting with insidious, progressive ischemic symptoms.
- Lesions are consistently located at the thoracic and lumbar levels.
Findings:
- Angiography reveals a fistulous AVM adjacent to the intervertebral foramen, supplied by a spinal dural branch.
- Drainage occurs into tortuous spinal cord veins via a radiculomedullary vein.
- Unlike other spinal cord AVMs, this type lacks a typical hair-pin arterial configuration and is anatomically dural, not pial.
Implications:
- This dural AVM subtype requires differentiation from pial spinal cord AVMs due to presumed distinct pathophysiology.
- Endovascular embolization is proposed as the first-line treatment strategy.
- Further research into the unique pathogenesis and optimal management of spinal dural AVMs is warranted.