Sometimes, it may have not bone destruction, but the lesion can go through the foramina, fissures and jugular fossa etc. into the intracranial at the skull base.

• 在此系列，常见到肿瘤直接破坏颅骨底部的中脑窝、蝶骨及枕底骨等，成为一条鼻咽癌颅内侵犯主要的路钱。