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目的探讨眼眶孤立性纤维瘤(solitary fibrous tumor,SFT)的CT和MRI诊断价值。方法回顾性分析经病理证实的5例眼眶SFT的CT和MRI表现,其中2例只行CT检查,2例只行MRI检查,1例同时有CT和MRI检查。患者中女性3例,男性2例,年龄33～54(中位年龄46)岁。影像表现主要评价其部分、大小、边缘、CT密度、MRI信号和增强方式。结果 5例病变均表现为边界清楚的软组织肿块,最大直径2.1～3.5 cm。3例位于球后肌锥外,2例位于球后肌锥内。3例CT上表现为稍高密度或等密度,其中1例其内可见点状钙化;3例MRI检查T1WI表现为等信号或稍低信号,信号相对均匀,而T2WI则信号稍混杂,其中1例等信号为主,混杂有高、低信号影,另2例肿块大部分表现为明显高信号,其内可见散在斑状、小片状低信号影。增强检查肿块均表现为明显欠均匀强化。结论眼眶SFT的MRI表现有一定特征性,应纳入眼眶富血供肿瘤鉴别之列。
Objective To investigate the value of CT and MRI in the diagnosis of solitary fibrous tumor (SFT). Methods The CT and MRI findings of 5 cases of orbital SFT confirmed by pathology were retrospectively analyzed. Among them, CT scan was performed in 2 cases, MRI scan was performed in 2 cases and CT and MRI were performed in 1 case. Among the patients, 3 were female and 2 were male, ranging in age from 33 to 54 (median 46 years). Imaging performance of the main evaluation of its part, size, edge, CT density, MRI signal and enhancement mode. Results All the 5 lesions showed clear soft tissue mass with a maximum diameter of 2.1-3.5 cm. 3 cases were located in the posterior bulb muscle, 2 cases were located in the posterior bulb muscle. 3 cases of CT showed a slightly higher density or isodense density, of which 1 case showed punctate calcification; 3 cases of T1WI MRI showed equal or slightly lower signal signal, the signal is relatively uniform, while T2WI signal slightly mixed, of which 1 Cases such as signal-based, mixed with high and low signal shadow, the other two cases showed most of the obvious high signal mass, which can be seen scattered patchy, small patchy low signal shadow. Enhanced examination of the tumor showed significant under-uniform enhancement. Conclusion The MRI features of orbital SFT have certain characteristics, should be included in the orbital blood for the identification of cancer.