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膝关节色素沉着绒毛结节性滑膜炎的MRI诊断 被引量:2

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摘要 目的:探讨膝关节色素沉着绒毛结节性滑膜炎(PVNS)的MRI表现及诊断价值。方法:回顾性分析10例经关节镜及病理证实的PVNS的MRI影像表现并进行总结。结果:10例病变均为单发。MRI表现为滑膜不规则结节状增厚或弥漫性增生。增厚的滑膜T1WI呈等信号6例、稍高信号1例和低信号3例;T2WI呈高信号2例,高、低混杂信号8例,其中T2*WI低信号显示更为明显。同时可伴有邻近韧带和(或)骨侵蚀、关节腔积液等,关节内外结构均可不同程度受侵。MRI增强扫描显示病变呈中度至明显强化。结论:膝关节滑膜结节状增生及其内点状、结节状含铁血黄素沉着是PVNS的典型表现,在MRI上具有一定的特征性,MRI检查有助于提高诊断准确率。
作者 孙宇
出处 《中国医药导报》 CAS 2011年第9期144-145,共2页 China Medical Herald
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