Introduction and importance

Spinal meningiomas are typically intradural lesions. Some may infiltrate the dura mater, thus exhibit direct extradural extension. Pure spinal epidural meningiomas are very rare. Here we present a 64 year-old-male with a purely extradural meningioma, and reviewed 15 previously reported cases from the literature.

Case presentation and clinical discussion

A 64-year-old male presented with a progressive cauda equine syndrome. When Lumbar spine MRI showed two extradural lesions regarding the L3-L4 level, one was fully removed (i.e., the posterolateral lesion), while the other anterior lesion was left alone (i.e., to avoid potential neurologic sequelae). Pathologically, the lesion was a benign meningioma.

Conclusions

Spinal epidural meningiomas are rare and should optimally be fully excised at the index surgery.

中文翻译：

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腰椎硬膜外脑膜瘤：罕见病例报告

简介和重要性

脊髓脑膜瘤通常是硬膜内病变。有些可能会渗入硬脑膜，从而表现出直接硬膜外延伸。纯脊髓硬膜外脑膜瘤非常罕见。在这里，我们介绍了一名患有纯粹硬膜外脑膜瘤的 64 岁男性，并回顾了之前文献报道的 15 例病例。

病例介绍和临床讨论

一名 64 岁男性患有进行性马尾综合征。当腰椎 MRI 显示 L3-L4 水平有两个硬膜外病变时，一个被完全切除（即后外侧病变），而另一个前部病变则单独保留（即避免潜在的神经系统后遗症）。病理学上，病变为良性脑膜瘤。

结论

脊髓硬膜外脑膜瘤很少见，最好在初次手术时完全切除。