Active surveillance and retrospective analysis is in place. 已經落實積極監測和回顧性分析。
Methods Two groups of airway pathologically proved neoplasma were retrospectively reviewed for the different endobronchial intervation modalities. 方法回顧性分析兩組經病理明確的氣道內惡性腫瘤，分別採取兩種不同的氣管鏡治療模式。
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