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，开口于不
部位的额窦窦口周围结构不，
究额窦的生理、病理，以及提高鼻窦内
镜检查
额窦开放手术具有重要的
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，开口于不部位的额窦窦口周围结构不，究额窦的生理、病理，以及提高鼻窦内镜检查额窦开放手术具有重要的指导意义。
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