孤立性纤维性肿瘤CT与MRI表现

发布时间：2018-05-21 02:47

本文选题：孤立性纤维性肿瘤 + 体层摄影术　；参考：《临床放射学杂志》2015年10期

【摘要】：目的探讨孤立性纤维性肿瘤(SFT)的CT与MRI特征。方法回顾性分析经手术病理证实的10例SFT的CT与MRI资料,将CT与MRI表现与手术病理结果对照观察。结果 (1)10例SFT中,3例位于胸部,1例位于颅内,4例位于腹盆腔,2例位于体表软组织;其中3例病理学诊断为恶性。肿瘤最大径1.5~21.8 cm。瘤体大多为实性,边缘清楚,多呈不规则形,少数边缘分叶状。(2)6例行CT扫描,瘤体密度均匀/混杂,部分伴有点状钙化及小片状出血;增强扫描呈明显均匀或不均匀"快进慢出"型强化,肿瘤血管多见。(3)4例行MRI扫描,T1WI上多呈不均匀等低信号,T2WI上呈以高信号为主的混杂信号,增强扫描呈明显不均匀强化;1例呈现多房囊样肿瘤的信号特点。(4)显微镜下肿瘤由疏密不均的梭形细胞、致密胶原间质以及大量薄壁血管组成。结论 SFT是一种可发生于全身各部位的梭形细胞肿瘤,确诊仍依靠病理学及免疫组织化学检查,影像学检查尤其CT扫描具有一定特征性。
[Abstract]:Objective to investigate the CT and MRI features of solitary fibrous tumor (SFT). Methods CT and MRI findings of 10 cases of SFT proved by operation and pathology were analyzed retrospectively. The findings of CT and MRI were compared with the results of operation and pathology. Results of the 10 cases of SFT, 3 cases were located in the chest, 1 case was located in the skull, 4 cases were located in the abdominal and pelvic cavity, 2 cases were located in the soft tissue of the body surface, and 3 cases were diagnosed as malignant by pathology. The maximum diameter of the tumor was 1.5 ~ 21.8 cm 路cm ~ (-1). Most of the tumors were solid, with clear margin and irregular shape. A few of them were divided into lobes. 6 cases were scanned by CT. The density of the tumor was even / mixed, and some of them were accompanied by calcification and small hemorrhage. Contrast-enhanced scan showed obvious homogeneous or uneven "fast in and slow out" enhancement, and most of the 4 cases of MRI scan showed heterogeneous and homogeneous low signal intensity on T _ 1WI, which were mainly mixed signal on T _ 2WI. One case presented signal characteristics of multilocular cystic tumor. Under the microscope, the tumor was composed of dense and uneven spindle cells, dense collagen stroma and a large number of parenchyma vessels. Conclusion SFT is a spindle cell tumor that can occur in all parts of the body. The diagnosis of SFT still depends on pathological and immunohistochemical examination.
【作者单位】：江苏省苏州大学附属第二医院放射科;江苏省苏州大学附属第二医院病理科;
【分类号】：R730.44;R445.2

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