摘要
目的:分析膝关节色素沉着绒毛结节性滑膜炎(PVNS)的MRI表现与诊断价值。材料和方法:回顾性分析9例经病理证实的色素沉着绒毛结节滑膜炎,总结其MRI表现特点。结果:局限型3例,弥漫型6例。PVNS主要表现为滑膜不规则结节状增生或弥漫性增生,增生的滑膜内含铁血黄素沉着(T2WI低信号)、邻近半月板和(或)骨侵蚀、关节腔积液等。结论:MRI能为早期诊断膝关节PVNS提供依据,并积极指导手术。
To analyze and evaluate MRI characteristics of pigmented villonodular synovitis （PVNS） in the knee joint. Materials and Methods： This retrospective study examined data from 9 cases of pathologically - confirmed PVNS. Result：All 9 cases of PVNS involved the knee（ 3 localized nodulars and 5 diffuse villous ）. The principal signs of MRI include intra - articular joint mass and extensive synovial proliferation with signal dropout on T2 weighted images（due to the paramagnetic effect of iron in hemosiderin）. Meanwhile the destruction of cartilage, bone and mencius were also be found. Conclusion： MRI can aid in the early diagnosis of pigmented villonodular synovitis, and guide the surgical method.
出处
《中国医学计算机成像杂志》
CSCD
2006年第4期266-269,共4页
Chinese Computed Medical Imaging
