The simplest explanation is that the epidural needle is not actually in the epidural space at the time of attempted spinal puncture.

最简单的解释是腰麻时硬膜外针未在硬膜外间隙。

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Conclusions the clinical features of spinal osteoblastoma are complex. Clinical manifestations, imaging features and needle biopsy could be performed conjointly to confirm the diagnosis.

结论脊柱骨母细胞瘤临床特征复杂，临床表现、影像学检查结合穿刺病理有助于确诊。

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