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目的 探讨小儿气管支气管异物的CT表现及诊断价值。方法 对 16例经纤维支气管镜证实的小儿气管支气管异物进行CT扫描。结果 直接征象 :CT直接显示异物及其所在部位的 13例 ,占 81 3 % ,局限性支气管阻塞而无明确异物显示的 3例 ,占 18 7%。间接征象 :阻塞性肺气肿 11例 ,纵隔双边影 5例 ,阻塞性肺不张 3例。合并症表现 :阻塞性肺炎 6例 ,纵隔气肿 1例 ,气胸 1例 ,渗出性胸膜炎 2例。结论 CT对气管支气管异物的显示率高 ,定位准 ,并可显示各种合并症的CT表现 ,对该病的诊断和鉴别诊断有重要价值
Objective To investigate the CT findings and diagnostic value of tracheobronchial foreign bodies in children. Methods Totally 16 children with tracheobronchial foreign body confirmed by fiberoptic bronchoscopy were scanned with CT. Results of direct signs: CT directly shows the foreign body and its location in 13 cases, accounting for 81 3%, limited bronchial obstruction and no clear foreign body showed 3 cases, accounting for 18 7%. Indirect signs: obstructive pulmonary emphysema in 11 cases, bilateral mediastinal 5 cases, obstructive atelectasis in 3 cases. Complications: obstructive pneumonia in 6 cases, mediastinal emphysema in 1 case, pneumothorax in 1 case, exudative pleurisy in 2 cases. Conclusions CT has a high rate of display of tracheobronchial foreign body and accurate positioning, and can show the CT manifestations of various comorbidities, which is of great value in the diagnosis and differential diagnosis of the disease