The adjacent structures of the ostia differ from each other by the different location of the ostium.The clinical significance of the ostium and the nasofrontal duct were discussed.
认为，
口于不同部位的额窦窦口周围结构不同，对研究额窦的生
、
，
及提高鼻窦内
镜检查和额窦
手术具有重要的参考和指导意义。
The adjacent structures of the ostia differ from each other by the different location of the ostium.The clinical significance of the ostium and the nasofrontal duct were discussed.
认为，口于不同部位的额窦窦口周围结构不同，对研究额窦的生、，及提高鼻窦内镜检查和额窦手术具有重要的参考和指导意义。
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