We present an extremely infrequent case of intradural metastasis of a parotid tumour, responsible for motor deficit in legs. To our knowledge, this is the first reported case of an intradural metastasis of a malignant and rare parotid tumour, oncocytic carcinoma. It accounts for less than 1% of salivary gland tumours. Its management is not codified and its prognosis seems to be poor. Local recurrences are common, as are regional metastases. Distant metastases are present in less than 30% of cases and are poorly described, mainly involving the lung. Thanks to the surgical treatment, our patient has partially recovered his motor and sensory functions.

中文翻译：

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腮腺嗜酸细胞癌硬膜内髓外转移首例报道并文献复习

我们提出了一个极其罕见的腮腺肿瘤硬膜内转移病例，导致腿部运动缺陷。据我们所知，这是首例报道的恶性且罕见的腮腺肿瘤（嗜酸细胞癌）硬膜内转移病例。它占唾液腺肿瘤的不到1%。它的管理没有规范化，而且其预后似乎很差。局部复发和区域转移很常见。不到 30% 的病例存在远处转移，且描述很少，主要累及肺部。通过手术治疗，患者的运动和感觉功能已部分恢复。