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，开口于不同部位
口周围结构不同，对研
生理、病理，以及提高鼻内
镜检查和开放手术具有
参考和指导意义。
复数）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，开口于不同部位口周围结构不同，对研生理、病理，以及提高鼻内镜检查和开放手术具有参考和指导意义。
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