小儿气道透X线异物X线诊断误漏诊分析

目的：旨在提高小儿气道透X线异物的X线诊断水平。方法：回顾性分析36例小儿气道透丝异物X线诊断，并与气管支气管镜结果对照，分析其误漏诊原因。结果：误漏诊共16例，其中支气管异物4例。气管异物7例，声门下异物2例，异物性局限性支气管炎3例，结论：对于小儿气道异物病的X线诊断，良好的深呼，吸气相胸片及动态透视结合诊断至关重要，并应按支气管，气管及声门下的顺序逐步诊断及鉴别诊断。

Analysis of missed diagnosis or misdiagnosis of radiolucent foreign body in respiratory tract by radiography in children

Objective:To improve X ray diagnostic accuracy of radiolucent foreign body in respiratory tract in children.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.Results:In 16 cases of missed diagnosis or misdiagnosis,4 cases were the foreign body in the bronchus, 7 cases intratracheal foreign body,2 cases subglottic foreign body,and 3 cases focal bronchitis secondary to the foreign body. Conclusion: Chest radiographs in deepbreath together with fluoroscopy play an important role in the diagnosis of the foreign body in children's respiratory tract. The following steps should be established in the diagnostic and differential diagnostic order of the foreign body in bronchus,trachea and subglottis.