【摘要】 目的:分析膝关节色素沉着绒毛结节性滑膜炎(PVNS)的MRI影像表现,提高对本病的认识。方法:回顾性分析13例经病理证实的膝关节色素沉着绒毛结节滑膜炎,总结其MRI表现特点。结果:13例患者中弥漫型9例,局限型4例。PVNS主要表现为滑膜不规则结节状增生或弥漫性增生,增生的滑膜和结节内沉着含铁血黄素(T1WI、T2WI双低信号)。关节内外结构可受侵。结论:PVNS所致的滑膜增生和含铁血黄素沉着在MRI上具有特征性的表现和信号,对诊断本病具有重要意义。更多还原

【Abstract】 Objective:To evaluate the MRI representations of pigmented villonodular synovitis(PVNS) of the knee joint,and increase the recognition of the disease.Methods:This retrospective study examined data from 13 cases of pathologically confirmed PVNS.Results:13 patients showed diffuse form(9 cases) and localized form(4 cases).The PVNS included irregular and nodular or diffused synovial proliferation,with low signal areas consistent both on T1WI and T2WI of hemosiderin deposition.The erosion involved intra-and extra-articulus.Conclusion:Irregular nodular synovial proliferation and hemosiderin deposition are the two main features of pigmented villonodular synovitis,based on which MRI diagnosis can be made.更多还原