眼眶孤立性纤维性肿瘤CT和MRI表现初探

发布时间：2018-04-15 01:22

本文选题：眼眶肿瘤 + 孤立性纤维性肿瘤　；参考：《临床放射学杂志》2017年09期

【摘要】：目的分析眼眶孤立性纤维性肿瘤(SFT)的CT及MRI影像学特征,以提高诊断水平。方法结合文献回顾性分析经手术病理证实、行CT或MRI检查的眼眶SFT 4例,其中2例行CT平扫,3例行MR平扫及增强检查,分析其发生部位、大小、形态、边缘、密度、信号、增强特点。结果 4例病变均表现为边界清楚的类圆形软组织肿块,直径8~62 mm。2例位于肌锥外,2例位于眼球后肌锥内。2例CT上表现为较均匀的等高密度影,3例MRI检查T1WI表现为均匀的等低信号,3例T_2WI为等低信号,其中1例肿瘤内可见高信号区。增强检查3例明显强化,1例T2WI高信号区,强化也较肿瘤的其他部分更加明显,病理上对应肿瘤中富含血管的区域。结论中年患者,眼眶内孤立的类圆形肿块,边界清楚,T_2WI上呈等低信号,增强扫描明显强化,动态曲线为快进流出型,要考虑SFT的可能。在T_2WI上高信号的区域表现为更加明显的强化,也是眼眶SFT的特点之一。
[Abstract]:Objective to analyze CT and MRI imaging features of orbital solitary fibrous tumor.Methods combined with literature review, 4 cases of orbital SFT confirmed by operation and pathology were examined by CT or MRI, of which 2 cases were performed plain CT scan and 3 cases Mr contrast enhancement. The location, size, shape, edge, density and signal intensity were analyzed.Enhance the characteristics.Results all the 4 cases showed round soft tissue masses with clear boundary.The diameter of 862 mm.2 was located outside the muscle cones in 2 cases. 2 cases were located in the posterior cones of the eyeball. On CT, 3 cases showed homogeneous isohypointensity on MRI, 3 cases showed iso-low signal intensity on T1WI, and 1 case showed hyperintense area in the tumor.Contrast enhancement was performed in 3 cases with T2WI hyperintense region in 1 case, and the enhancement was more obvious than that in other parts of the tumor, which was corresponding to the vascular-rich region in the tumor pathologically.Conclusion in middle age patients, solitary round masses in orbit show iso-low signal on T _ tid _ 2WI, enhancement is obvious, dynamic curve is fast forward and outflow type, the possibility of SFT should be considered.The enhancement of hyperintense region on T_2WI is also one of the characteristics of orbital SFT.
【作者单位】：第三军医大学大坪医院野战外科研究所放射科;第三军医大学大坪医院野战外科研究所病理科;
【分类号】：R445.2;R730.44;R739.7

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