滑膜肉瘤的影像学表现  

Imaging Findings of Synovial Sarcoma

作　　者：段庆红[1] 王学建[1] 赵震奇[1] 

机构地区：[1]贵阳医学院附属医院放射科,贵州贵阳550004

出　　处：《实用放射学杂志》2005年第9期937-939,共3页Journal of Practical Radiology

摘　　要：目的探讨滑膜肉瘤的影像学特征,提高诊断的准确性。方法回顾性分析病理确诊的13例滑膜肉瘤的临床及影像学资料。结果①大部分滑膜肉瘤邻近关节,尤其下肢大关节。②X线平片上多表现为直径>5cm的中等密度的肿块,部分有钙化。③CT上多表现为略低于肌肉密度的肿块,边界清楚或不清楚,内部密度欠均匀。④磁共振T2WI/STIR像肿瘤内多呈稍高信号的“卵石”状结节,其间有低信号间隔,增强后结节不强化或轻度强化,间隔明显强化。结论滑膜肉瘤的一些影像学特点,尤其MRI特点对其诊断有较强的参考价值。Objective To investigate the image characteristics of Synovial Sarcoma, and improve the diagnostic accuracy. Methods The clinical materials and image findings of synovial sarcomas proved by pathology and were retrospectively analyzed in 13 cases. Results ①Most synovial sarcomas located in close proximity to joints, especially large joints of lower limbs . ②The mass diameter was usually more than 5cm ,and most masses presented moderate density, and some with calcification inside it on X - ray films. ③Most masses density was not homogeneous and lower than that of the muscle on CT, the demarcation was clear or not. ④On T2WI/STIR of MRI, most tumours presented slightly hyperintense “cobble” nodules , with hypointense septa among the nodules. After contrast, the nodules were unenhanced or enhanced slightly,the septa were markedly enhanced. Conclusion Some image features of synovial sarcoma ,especially on MRI, are helpful for the diagnosis of it.

关 键 词：滑膜肉瘤 影像学表现 

分 类 号：R738.5[医药卫生—肿瘤] R814.42[医药卫生—临床医学]