色素沉着绒毛结节性滑膜炎的MRI诊断

MRI in Diagnosis of Pigmented Villonodular Synovitis

目的:探讨色素沉着绒毛结节性滑膜炎(PVNS)的MRI表现。方法:回顾性分析17例经病理证实的膝关节PVNS患者,总结其MRI表现。结果:17例膝关节PVNS在MRI各序列上均具有特征性表现,滑膜弥漫性增厚,可见含铁血黄素的结节,T1WI、T2WI均呈低信号。结论:PVNS在MRI表现中具有特异性征象,因此MRI对于PVNS的诊断价值是其它影像检查手段无法比拟的。

Objective： To investigate MRI features of pigmented villonodular synovitis. Methods： MRI findings of 17 patients with pathologically- proved pigmented villonodular synovitis were retrospectively analyzed. Results：Typical feature can be seen on every alignment of MRI scan in the 17 patients including nodular synovitis proliferation, typical for hemosiderin deposition, isolow signal on TIWI and T2WI. Conclusion：PVNS has typical feature in MRI scan. Contrasting the other diagonosis of image , MRI is of great value in diagnosing PVNS.