【摘要】 目的分析色素沉着绒毛结节性滑膜炎的MRI表现。方法回顾9例经病理证实的色素沉着绒毛结节性滑膜炎。结果MRI表现为:滑膜不规则,结节状,绒毛状增生呈长T1长T2信号,内有含铁血黄素沉着呈长T1短T2或长T1等T2信号,关节腔积液,邻近骨质受压缺损,周围可有硬化边,骨髓水肿改变。结论低磁场MRI既能对PVNS有定性诊断价值亦能准确的显示PVNS病变的范围和程度。更多还原

【Abstract】 Objective To anayze MRI features of pigmented villonodular synovitis.Methods MR findings of 9 patients with pathologically-proved pigmented villonodular synovitis.were retrospectively analyzed.Results The main MR sugns of pigmented villonodular synovitis included irregular and nodular synovial proliferation demonserated as low signal on T1WI and high signal on T2WI.Hemosiderin deposition in zhe thickened synovium was revealed as low signal on both T1WI and T2WI. Hydrarthrosis was seen in all cases erosion of articular carticular cartilage and bone in 4 cases.Conclusion The nodulated and villose proliferation of the synovium and hemosiderin deposition within villonodules are the typical MRI signs of PVNS on low MRI.更多还原