椎管内孤立性纤维瘤的MRI表现  

MRI features of solitary fibrous tumors in the spinal canal

作　　者：谢晶美 牛璇[1] 范妤欣[1] 侯丹玮 郭宝琴[2] 李华[2] 张明[1] 

机构地区：[1]西安交通大学第一附属医院影像科,陕西西安710061 [2]榆林市第二医院影像中心,陕西榆林719000 [3]商洛市中心医院影像中心,陕西商洛726000

出　　处：《实用放射学杂志》2018年第1期5-7,11,共4页Journal of Practical Radiology

摘　　要：目的 探讨椎管内孤立性纤维瘤（SFT）的MRI特征.方法 回顾性分析5例经手术病理证实椎管内SFT 的MRI征象.结果 5例患者中2例位于颈段,3例位于胸段;1例位于硬膜外,4例位于髓外硬膜下.MRI平扫3例呈均匀等 T1、低T2信号,2例信号不均匀,其中1例病变上缘可见片状双低信号,最后病理证实为出血灶,1例病变内可见囊变.增强扫描5例均强化,其中2例中度强化,3例明显强化;1例其内囊变区未强化,1例其内出血区未强化.3例可见＂脊膜尾征＂.结论 椎管内出现局限的单发肿块,T2低信号,增强扫描中等或明显强化有助于提高椎管内SFT的术前诊断.Objective To investigate the MRI features of solitary fibrous tumors（SFT）in the spinal canal.Methods MRI images of 5 cases with pathologically proved STF in the spinal canal were analyzed retrospectively.Results Of 5 lesions,there were 2 in the cervical spine,3 in the thoracic spine;1 in the epidural space and 4 in the subdural extramedullary space.On MRI plain scan,3 lesions showed homogeneous iso-intense signal on T1WI and hypo-intense signal on T2WI,2 lesions showed heterogeneous signal,1 showed patchy hypo-intense signal on T1WI and T2WI at the upper edge of lesion,which had been confirmed as hemorrhage and the other lesion showed internal cystic variation.All of the 5 lesions enhanced on enhancement scan,with moderate enhancement in 2 lesions and significant enhancement in 3 lesions.Cystic and hemorrhagic area were not enhanced.The＂dural tail sign＂was showed in 3 cases.Conclusion The diagnosis of SFT should be considered when a lesion shows a localized solitary mass in the spinal canal with hypo-intense on T2WI and moderate to significant enhancement.

关 键 词：椎管 孤立性纤维瘤 磁共振成像 

分 类 号：R739.4[医药卫生—肿瘤] R445.2[医药卫生—临床医学]