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，对研究
、病，以及提高
内窥镜检查
开放手术具有重要参考指导意义。
,骨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，对研究、病，以及提高内窥镜检查开放手术具有重要参考指导意义。
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