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Value of prominent flow voids without cord edema in the detection of spinal arteriovenous fistulae.

Alhilali LM, Reynolds AR, Fakhran S - PLoS ONE (2014)

Bottom Line: We excluded patients with other major spinal pathology or other imaging findings of SDAVF including cord hyperintensity, enhancement, or expansion.The prevalence of SDAVF in this population was low, only 17% (95% CI 6-39%).Prominent flow voids without other imaging findings suggestive of SDAVF is poorly predictive of the presence of a SDAVF, unless myelopathy is present clinically.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States of America.

ABSTRACT

Purpose: To determine the prevalence of spinal dural arteriovenous fistulae (SDAVF) in patients presenting with prominent vascular flow voids on imaging without other imaging findings suggestive of SDAVF.

Methods: We retrospectively identified patients from January 1, 2005 to March 1, 2012 who underwent spinal angiography for suspected SDAVF with prominent vascular flow voids on prior imaging. We excluded patients with other major spinal pathology or other imaging findings of SDAVF including cord hyperintensity, enhancement, or expansion. We calculated the proportion of patients with positive findings for SDAVF on angiography and evaluated the prevalence of SDAVF for this finding alone and in correlation with clinical findings.

Results: 18 patients underwent spinal angiography for prominent flow voids on imaging without other spinal pathology or imaging findings of SDAVF. Three had a SDAVF detected on angiography. The prevalence of SDAVF in this population was low, only 17% (95% CI 6-39%). All of the patients with positive angiography findings had myelopathy, increasing the prevalence to 100% if the additional clinical finding of myelopathy was present.

Conclusions: Prominent flow voids without other imaging findings suggestive of SDAVF is poorly predictive of the presence of a SDAVF, unless myelopathy is present clinically.

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Abnormal flow voids without cord signal are seen in both patients with and without SDAVF.Sagittal T2-weighted images show prominent flow voids in (a) a patient with a positive spinal angiogram (arrows) and (b) a patient with negative angiography results (triangular arrowheads).
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pone-0099004-g001: Abnormal flow voids without cord signal are seen in both patients with and without SDAVF.Sagittal T2-weighted images show prominent flow voids in (a) a patient with a positive spinal angiogram (arrows) and (b) a patient with negative angiography results (triangular arrowheads).

Mentions: The prevalence of SDAVF in our population with only prominent flow voids was 17% (95% CI 6-39%). Figure 1 shows a comparison of images between three patients with prominent flow voids on MR, one with a positive angiogram and two without findings on angiography.


Value of prominent flow voids without cord edema in the detection of spinal arteriovenous fistulae.

Alhilali LM, Reynolds AR, Fakhran S - PLoS ONE (2014)

Abnormal flow voids without cord signal are seen in both patients with and without SDAVF.Sagittal T2-weighted images show prominent flow voids in (a) a patient with a positive spinal angiogram (arrows) and (b) a patient with negative angiography results (triangular arrowheads).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4048235&req=5

pone-0099004-g001: Abnormal flow voids without cord signal are seen in both patients with and without SDAVF.Sagittal T2-weighted images show prominent flow voids in (a) a patient with a positive spinal angiogram (arrows) and (b) a patient with negative angiography results (triangular arrowheads).
Mentions: The prevalence of SDAVF in our population with only prominent flow voids was 17% (95% CI 6-39%). Figure 1 shows a comparison of images between three patients with prominent flow voids on MR, one with a positive angiogram and two without findings on angiography.

Bottom Line: We excluded patients with other major spinal pathology or other imaging findings of SDAVF including cord hyperintensity, enhancement, or expansion.The prevalence of SDAVF in this population was low, only 17% (95% CI 6-39%).Prominent flow voids without other imaging findings suggestive of SDAVF is poorly predictive of the presence of a SDAVF, unless myelopathy is present clinically.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States of America.

ABSTRACT

Purpose: To determine the prevalence of spinal dural arteriovenous fistulae (SDAVF) in patients presenting with prominent vascular flow voids on imaging without other imaging findings suggestive of SDAVF.

Methods: We retrospectively identified patients from January 1, 2005 to March 1, 2012 who underwent spinal angiography for suspected SDAVF with prominent vascular flow voids on prior imaging. We excluded patients with other major spinal pathology or other imaging findings of SDAVF including cord hyperintensity, enhancement, or expansion. We calculated the proportion of patients with positive findings for SDAVF on angiography and evaluated the prevalence of SDAVF for this finding alone and in correlation with clinical findings.

Results: 18 patients underwent spinal angiography for prominent flow voids on imaging without other spinal pathology or imaging findings of SDAVF. Three had a SDAVF detected on angiography. The prevalence of SDAVF in this population was low, only 17% (95% CI 6-39%). All of the patients with positive angiography findings had myelopathy, increasing the prevalence to 100% if the additional clinical finding of myelopathy was present.

Conclusions: Prominent flow voids without other imaging findings suggestive of SDAVF is poorly predictive of the presence of a SDAVF, unless myelopathy is present clinically.

Show MeSH
Related in: MedlinePlus