色素沉着绒毛结节性滑膜炎（Pigmented Villonodular Synovitis PVNS）是指任何慢性滑膜炎时，反复出血使滑膜变暗、滑膜深层增厚形成绒毛状，色素沉着、形成结节。
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Purpose To research the pathogenesis and mechanism of bone erosion and the imaging characters of pigmented villonodular synovitis (PVNS) of the knee.
目的探讨膝关节色素沉着绒毛结节滑膜炎(PVNS)的发病与骨破坏机制、影像特征。
Objective To investigate the MRI diagnostic valuation of pigmented villonodular synovitis (PVNS) of knee joint.
目的探讨MRI对膝关节色素沉着绒毛结节性滑膜炎(PVNS)的诊断价值。
Methods the ct manifestations of 4 cases with pigmented villonodular synovitis (PVNS) in the knee joint which were proved by pathology were analyzed retrospectively.
方法回顾性分析4例经手术或穿刺活检病理证实的膝关节色素沉着绒毛结节性滑膜炎的CT表现。
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