extradural approach的用法和樣例：
例句
- There have been few reports on extradural rheumatoid nodules.
很少有關於硬膜外類風濕性結節的報道。 - A case of extradural angiolipoma with spinal cord compression is reported.A 25 year-old female debeloped gradually progressive lower limbs weakness during a two-year period.
摘要硬脊膜外血管性脂肪瘤是一種少見的良性腫瘤，組織學上包含了不同比例的血管和脂肪組織。
