膝关节色素沉着绒毛结节性滑膜炎的MRI表现  

The features of MRI of pigmented villonodular synovitis of knee joint

作　　者：侯建明[1] 任彦玲[1] 叶添生[2] 戴志龙[1] 

机构地区：[1]解放军第532医院MR室,安徽黄山245041 [2]解放军第532医院骨科,安徽黄山245041

出　　处：《医学影像学杂志》2008年第2期162-164,共3页Journal of Medical Imaging

摘　　要：目的:探讨膝关节色素沉着绒毛结节性滑膜炎(pigmented villonodular synovitis,PVNS)的MRI表现。方法:回顾性分析7例经手术及病理证实的膝关节PVNS的MRI影像资料。结果:7例中弥漫性6例,局限性1例。6例弥漫性PVNS均见关节腔积液,其中3例髌上囊积液中见低信号结节,3例前、后交叉韧带表面可见不规则增厚的低信号滑膜覆盖,4例伴有软骨及软骨下骨的侵蚀,周围有低信号硬化边。2例增强扫描显示增厚的滑膜和结节均明显强化。1例局限性PVNS表现为单发性肿块伴关节腔积液。结论:膝关节PVNS的MRI表现具有特征性,能够作出正确诊断。Objective：To evaluate the value of MRI in diagnosing pigmented villonedular synovitis （PVNS） of knee joint. Methods： The MRI findings of 7 cases of PVNS verified by operations and pathology were retrospectively analyzed. Results：MRI in 7 cases showed diffuse form （6 cases） and localized form （ 1 ease）. In diffuse form of PVNS, the joint effusion presented in all of the cases, and low signal nodules were displayed in the suprapatellar bursa effusion in 3 cases, and low signal proliferated synovium covered on the surface of the cruciated ligaments in 3 cases on T2WI. Erosion of cartilage and hone in 4 cases, and the low signal sclerotic margins were showed. The proliferated synovium and synovial nodules were enhanced after contrast administration in 2 cases. In localized form of PVNS in 1 case, the single mass with joint effusion occurred.Conclusion：The MRI findings of PVNS is characteristic, the diagnosis of PVNS can be correctly established based on MRI features.

关 键 词：膝关节 色素沉着绒毛结节性滑膜炎 磁共振成像 

分 类 号：R686.7[医药卫生—骨科学] R445.2[医药卫生—外科学]