膝关节色素沉着绒毛结节性滑膜炎MRI表现分析

The MRI performance and analysis of knee pigmented villonodular synovitis

目的探讨膝关节色素沉着绒毛结节性滑膜炎(pigmented villonodular synovitis,PVNS)的核磁共振(MRI)表现及诊断价值。方法回顾性分析18例经手术及病理证实的膝关节PVNS的MRI表现并进行总结。结果18例均为单关节发病,弥漫型,MRI表现为滑膜不规则增厚,呈绒毛状、结节状,T1WI以等、低信号为主,T2WI以低、等信号为主,增强扫描呈中度至明显强化。结论 PVNS在MRI检查中有特征性表现,MRI能更好地显示病变范围及其邻近结构的关系,具有定性诊断的价值。

Objective To evaluate the MRI performance and the diagnosis value of the synovitis（PVNS）. Methods Retrospectivly analyzed 18 cases who were confirmed by surgery and pathology pigmented villonodular synovitis of the knee. Result The 18 cases were diffuses, single knee joint disease. The MRI performance was registered as irregular nodular hyperplasia or diffuse hyperplasia, it was such as signal 6r love signal on T1WI and low signal or such as sig- nal on T2WI, enhance scanning was moderate to strengther significantly. Conclusion PVNS has characteristic perfor- mance in MRI check, which can show the scope of the disease and the relationship of the nearby structure better, and have the value of qualitative diagnosis.