此外，原发瘤可以扩展到鼻腔(5例)，副鼻窦和颅底(5例)。
Besides, the primary tumor might extend to the nasal fossa (5 cases), paranasal sinuses and the base of the skull (5 cases).
目的：探讨累及前颅底或颅内脑组织的鼻腔鼻窦癌的手术切除途径及方法。
Objective:To study the craniofacial surgery for the tumors of nasal cavity and paranasal sinuses invading the anteri6r skull base or the intracranial tissue.
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