Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
AJNR Am J Neuroradiol. 2013 May;34(5):1067-71. doi: 10.3174/ajnr.A3340. Epub 2013 Jan 10.
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.
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.
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).
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.
眼眶 SFT 是一种罕见的肿瘤，术前常误诊为眼眶神经鞘瘤，但两者的预后和治疗方法不同。本研究旨在评估可能有助于将眼眶 SFT 与神经鞘瘤相鉴别的 MRI 特征。
回顾性分析了经病理证实的 9 例 SFT 和 22 例眼眶神经鞘瘤患者的 MRI 资料，包括 DCE 扫描。评估了肿瘤的位置、形态、边界、信号强度、均匀性、强化方式、ER 和 TIC。
SFT 和神经鞘瘤在位置和 T2 信号强度方面存在统计学差异（P <.05）。在 T2 加权成像上呈高信号区的强化方式和 TIC 类型方面也存在统计学差异（P <.01）。
MRI 有助于鉴别眼眶 SFT 和神经鞘瘤。T2 加权成像上高信号区的强化方式和 DCE-MRI 上 TIC 类型在鉴别眼眶 SFT 和神经鞘瘤中起重要作用。
