Methods : X ray findings of tracheobronchial foreign body in 36 children and the reasons of its missed diagnosis or misdiagnosis were retrospectively analyzed when compared with the findings by tracheobronchoscopy .

方法：回顾性分析36例小儿气道 透X线异物 X线诊断，并与气管支气管镜结果对照，分析其误漏 诊原因。