Basal skull的用法和样例：
例句
- Chordomas are rare tumors of notochordal tissue remnants and most frequently affect the sacrum and skull base.
摘要脊索瘤是来自脊索遗迹的罕见肿瘤，主要侵犯荐椎及颅底。 - There is no clear consensus on the management strategy for skull base metastasis from differentiated thyroid carcinoma.
关于分化型甲状腺癌颅底转移的治疗策略，还没有明确的共识。
