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Research ArticleHead and Neck Imaging
Open Access

Value of MR Imaging in Differentiation between Solitary Fibrous Tumor and Schwannoma in the Orbit

Z. Zhang, J. Shi, J. Guo, F. Yan, L. Fu and J. Xian
American Journal of Neuroradiology January 2013, DOI: https://doi.org/10.3174/ajnr.A3340
Z. Zhang
From the Departments of Radiology (Z.Z., J.G., F.Y., L.F., J.X.) and Eye Center (J.S.), Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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J. Shi
From the Departments of Radiology (Z.Z., J.G., F.Y., L.F., J.X.) and Eye Center (J.S.), Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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J. Guo
From the Departments of Radiology (Z.Z., J.G., F.Y., L.F., J.X.) and Eye Center (J.S.), Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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F. Yan
From the Departments of Radiology (Z.Z., J.G., F.Y., L.F., J.X.) and Eye Center (J.S.), Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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L. Fu
From the Departments of Radiology (Z.Z., J.G., F.Y., L.F., J.X.) and Eye Center (J.S.), Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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J. Xian
From the Departments of Radiology (Z.Z., J.G., F.Y., L.F., J.X.) and Eye Center (J.S.), Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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Abstract

BACKGROUND AND PURPOSE: Orbital SFT is a rare tumor, often misdiagnosed as orbital schwannoma preoperatively but with different prognosis and treatment. Our aim was to evaluate MR imaging features that might distinguish orbital SFT from schwannoma.

MATERIALS AND METHODS: MR imaging including DCE scanning was performed in 9 patients with SFT and 22 patients with schwannoma in the orbit confirmed by pathology. Location, shape, margin, signal intensity, homogeneity, enhancement pattern, ER, and TIC of the tumors were retrospectively evaluated.

RESULTS: There was a statistically significant difference between SFT and schwannoma in location and T2 signal intensity (P < .05). A statistically significant difference was also found regarding the enhancement pattern of the very high-signal-intensity areas shown on T2-weighted imaging and the type of TICs (P < .01).

CONCLUSIONS: MR imaging is useful in differentiating orbital SFT and schwannoma. The enhancement pattern of the very high-signal-intensity areas shown on T2-weighted imaging and the type of TICs on DCE MR imaging played an important role in differentiating orbital SFT from schwannoma.

Abbreviations

CI
contrast index
ER
enhancement ratio
DCE
dynamic contrast-enhanced
SFT
solitary fibrous tumor
TIC
time-intensity curve

Footnotes

  • Zhengyu Zhang and Jitong Shi shared equally in the authorship of this article and are co-first authors.

  • © 2013 American Society of Neuroradiology

Indicates open access to non-subscribers at www.ajnr.org

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Cite this article
Z. Zhang, J. Shi, J. Guo, F. Yan, L. Fu, J. Xian
Value of MR Imaging in Differentiation between Solitary Fibrous Tumor and Schwannoma in the Orbit
American Journal of Neuroradiology Jan 2013, DOI: 10.3174/ajnr.A3340

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Value of MR Imaging in Differentiation between Solitary Fibrous Tumor and Schwannoma in the Orbit
Z. Zhang, J. Shi, J. Guo, F. Yan, L. Fu, J. Xian
American Journal of Neuroradiology Jan 2013, DOI: 10.3174/ajnr.A3340
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