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Small isolated paraspinal arteriovenous fistula
1Department of Radiology, Chang Gung Memorial Hospital and Medical College, Taipei, Taiwan.
AJNR. American Journal of Neuroradiology
|February 1, 1997
Summary
A small paraspinal arteriovenous fistula (AVF) caused spinal venous hypertension and symptoms mimicking spinal dural AVF. Contrast-enhanced MRI is crucial for diagnosing these rare, extraspinal vascular malformations.
Area of Science:
- Vascular Surgery
- Neurology
- Radiology
Background:
- Spinal arteriovenous fistulas (AVFs) are rare vascular malformations.
- Spinal dural AVFs are the most common type, often presenting with venous hypertension.
- Extraspinal AVFs are less common and can be challenging to diagnose.
Observation:
- A case of a small, isolated paraspinal arteriovenous fistula (AVF) in an adult is presented.
- The AVF was extraspinal and not associated with trauma.
- The patient exhibited symptoms similar to spinal dural AVF due to intrathecal venous hypertension.
Findings:
- The small, extraspinal paraspinal AVF induced significant intrathecal venous hypertension.
- Despite its size and location, the fistula mimicked the clinical presentation of spinal dural AVFs.
- Diagnosis was challenging due to the lesion's subtle nature.
Implications:
- This case highlights the importance of considering extraspinal vascular lesions in the differential diagnosis of spinal venous hypertension.
- Contrast-enhanced magnetic resonance imaging (MRI) is a valuable tool for detecting small and difficult-to-visualize AVFs.
- Early and accurate diagnosis of paraspinal AVFs is essential for appropriate management and prevention of neurological complications.