RT Journal Article
SR Electronic
T1 Value of MR Imaging in Differentiation between Solitary Fibrous Tumor and Schwannoma in the Orbit
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1067
OP 1071
DO 10.3174/ajnr.A3340
VO 34
IS 5
A1 Zhang, Z.
A1 Shi, J.
A1 Guo, J.
A1 Yan, F.
A1 Fu, L.
A1 Xian, J.
YR 2013
UL http://www.ajnr.org/content/34/5/1067.abstract
AB 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. CIcontrast indexERenhancement ratioDCEdynamic contrast-enhancedSFTsolitary fibrous tumorTICtime-intensity curve