滑膜肉瘤的影像特征分析

目的探讨滑膜肉瘤的影像学特征,以提高对本病的诊断水平。方法回顾性分析经病理确诊的10例滑膜肉瘤的临床及影像学资料。结果①滑膜肉瘤好发于四肢大关节附近,尤其下肢关节;②X线表现为软组织肿胀或明显肿块影,肿块内有时可见点状钙化;CT一般表现为略低于肌肉密度的肿块,内部密度欠均匀,可见肿块内钙化及邻近骨质侵犯;MRI示肿瘤信号不均匀,T2WI上肿瘤多呈三重信号征,其间有低信号间隔,增强扫描呈不均匀强化。结论滑膜肉瘤具有一定的影像学特征表现,尤其MRI特点有较强的诊断参考价值。

Analysis to Radiological Features of Synovial Sarcoma

Objective To study the imaging characteristics of synovial sarcoma,and improve the level of diagnosis to it.Methods The clinical materials and image finding of synovial sarcoma were retrospectively analyzed in 10 cases proved by pathology.Results ①Most synovial sarcomas were close to joints,especially large joints of lower limbs;②X-ray appeared the soft tissue swelling or the obvious tumour mass,in which punctuate calcification sometimes was found;the mass density was not homogeneous and lower than that of the muscle on CT,CT could detect calcification and vicinal bone involvement;on T2WI of MRI,the tumors presented triple sign with hypointense septa among them,and heterogeneous enhancement after the injection of Gd-DTPA.Conclusion Synovial sarcoma has some specific imaging features,particularly on MRI,are helpful for the diagnosis of it.