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Absence of abnormal vessels in the subarachnoid space on conventional magnetic resonance imaging in patients with spinal dural arteriovenous fistulas
- Source :
- Neurosurgical focus. 32(5)
- Publication Year :
- 2012
-
Abstract
- Spinal dural arteriovenous fistula (DAVF) is an uncommon condition that can be difficult to diagnose. This often results in misdiagnosis and treatment delay. Although conventional MRI plays an important role in the initial screening for the disease, the typical MRI findings may be absent. In this article, the authors present a series of 4 cases involving patients with angiographically proven spinal DAVFs who demonstrated cord T2 prolongation on conventional MRI but without abnormal subarachnoid flow voids or enhancement. These cases suggest that spinal DAVF cannot be excluded in symptomatic patients with cord edema based on conventional MRI findings alone. Dynamic Gd-enhanced MR angiography (MRA) was successful in demonstrating abnormal spinal vasculature in all 4 cases. This limited experience provides support for the role of spinal MRA in patients with abnormal cord signal and symptoms suggestive of DAVF even when typical MRI findings of a DAVF are absent.
- Subjects :
- Male
medicine.medical_specialty
Cord
Arteriovenous fistula
Contrast Media
Gadolinium
Magnetic resonance angiography
Subarachnoid Space
Dural arteriovenous fistulas
Edema
medicine
Humans
In patient
Aged
medicine.diagnostic_test
business.industry
Magnetic resonance imaging
General Medicine
Middle Aged
medicine.disease
Magnetic Resonance Imaging
medicine.anatomical_structure
Spinal Cord
Arteriovenous Fistula
Surgery
Female
Neurology (clinical)
Radiology
Dura Mater
Subarachnoid space
medicine.symptom
business
Subjects
Details
- ISSN :
- 10920684
- Volume :
- 32
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Neurosurgical focus
- Accession number :
- edsair.doi.dedup.....15245e0232500bb39e7bc4d940260966