孤立性纤维瘤的影像学表现及临床病理学特征

Solitary fibrous tumor:imaging and clinicopathological features

目的探讨孤立性纤维瘤(SFT)的影像表现及临床病理特征。方法回顾性分析经本院病理证实的20例孤立性纤维瘤患者的CT、MR及临床病理资料。结果本组20例患者中,SFT发生于肺部4例、胸腔1例、纵隔3例、盆腔5例、胃窦部1例、头颈部4例、肩部1例、大腿1例。肿瘤大小不一,平均最大径(6.7±4.1)cm。14例肿瘤见分叶,15例密度不均匀,2例肿瘤见钙化、9例出现坏死囊变,12例呈不均匀强化,2例轻度强化,15例明显强化,13例肿瘤内出现迂曲血管。结论孤立性纤维瘤是一种少见梭形肿瘤,发病部位广泛,主要表现为单发,形态规则或有分叶,易出血、囊变坏死,增强扫描呈明显持续强化,肿瘤内易出现粗大杂乱血管。提高对该病的认识,对术前诊断有较大帮助。

Objective To investigate the imaging and clinicopathological features of solitary fibrous tumor(SFT).MethodsA retrospective analysis was carried out focusing on CT,MR and clinicopathological data of 20 patients with SFT confirmed by pathology in our hospital.Results Of the enrolled 20 patients in this study,SFT occurred in 4 cases of lung,1 case of thorax,3 cases of mediastinum,5 cases of pelvis,1 case of antrum,4 cases of head and neck,1 case of shoulder and 1 case of thigh.The detected tumor had a varied size,with the average maximum diameter of(6.7±4.1)cm.Furthermore,14 tumors were lobular in shape,15 had uneven density,2 showed calcification,9 developed necrotic cystic degeneration,12 revealed uneven enhancement,2 appeared mild enhancement,15 presented marked enhancement,and 13 displayed metastatic vessels in the tumors.Conclusion SFT is a rare spindle-shaped neoplasm with a wide range of sites involved.It is characterized by solitary lesion,regular or lobulated appearance,high risk of bleeding,cystic necrosis,and continuous enhancement of contrast-enhanced scanning.Besides,large and disordered blood vessels are easily developed in the tumors.It is of great significance for preoperative diagnosis by improving the understanding of the disease.