孤立性纤维性肿瘤的CT和MRI表现

发布时间：2018-01-29 14:58

本文关键词： 孤立性纤维性肿瘤体层摄影术 X线计算机磁共振成像　出处：《临床放射学杂志》2015年05期 　论文类型：期刊论文

【摘要】：目的探讨孤立性纤维性肿瘤(SFT)的CT和MRI表现,以提高对本病的认识。方法回顾性分析经病理及免疫组织化学证实的21例SFT的CT及MRI表现。13例行CT检查,其中10例行增强扫描;7例行MRI检查,4例行增强扫描;1例行CT、MRI平扫及CT增强扫描。结果 21例均为单发病灶,其中肿瘤位于胸部10例,腹部4例,颈面部3例,颅内2例,椎管内1例,眼眶1例。肿瘤最大径1.5~30.0 cm,平均9.9 cm。体积较小者呈椭圆形或圆形,体积较大者呈分叶状或不规则状。CT表现:肿瘤实质呈与肌肉相似的等密度,8例内见斑片状囊变坏死区,1例肿瘤内见条状钙化,3例伴出血;MRI表现:肿瘤实质在T1WI上呈等信号,T2WI上3例呈等信号或稍低信号,4例呈高信号,1例呈等高混杂信号,4例肿瘤内见囊变。增强表现:10例呈不均匀性强化,其中7例强化呈"地图"样;7例肿瘤内或周边可见明显强化的迂曲血管。结论 SFT的CT及MRI表现有一定的特征性,提高对本病的认识有助于术前的正确诊断。
[Abstract]:Objective to investigate the CT and MRI findings of solitary fibrous tumor (SFT). Methods CT and MRI findings of 21 cases of SFT confirmed by pathology and immunohistochemistry were analyzed retrospectively. 7 cases were examined with MRI and 4 cases with contrast-enhanced scan. Results 21 cases were single lesions, including 10 cases in chest, 4 cases in abdomen, 3 cases in neck and face, 2 cases in intracranial and 1 case in spinal canal. The maximum diameter of the tumor was 1.5 ~ 30.0 cm, with an average of 9.9 cm. The size of the tumor was oval or round. Ct findings of larger size were lobular or irregular. Ct findings showed that the tumor parenchyma showed isodensity similar to muscle in 8 cases with plaque cystic degeneration and dead zone in 1 case, stripe calcification was found in 3 cases with hemorrhage. MRI findings: the tumor parenchyma showed iso-signal on T _ 1WI and iso-signal on T _ 2WI in 3 cases, or hyperintense signal in 4 cases on T _ 2WI. Cystic changes were found in 4 cases. 10 cases showed heterogeneous enhancement, 7 of which showed "map" enhancement. Conclusion the CT and MRI findings of SFT have some characteristics, and improving the understanding of this disease is helpful to the correct diagnosis before operation.
【作者单位】：安徽医科大学第一附属医院放射科;
【分类号】：R730.262;R730.44;R445.2
【正文快照】： 孤立性纤维性肿瘤(solitary fibrous tumors,SFT)是一种少见的间叶组织来源的梭形细胞肿瘤[1]。SFT最常见于胸膜,也可发生于全身各部位[2,3]。有关本病影像学表现的报道不多,且发生于胸部以外者多为个案报道,术前影像正确诊断率较低。笔者回顾性分析经病理证实的21例SFT,总结

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