Seibert R W, Seibert J J, Williamson S L
Pediatr Radiol. 1986;16(3):193-6. doi: 10.1007/BF02456285.
A bronchial foreign body should be strongly suspected in a child with an opaque chest without a previous history of airways disease when there is: any sign of volume loss or atelectasis in the lung density and bronchiectasis within the lung density. Ultrasound may be helpful to rule out the presence of pleural fluid and may even demonstrate the bronchiectasis when the bronchi are fluid-filled.
对于无既往气道疾病史且胸部不透光的儿童，若肺部密度有任何肺容积减少或肺不张的迹象以及肺部密度内有支气管扩张，则应高度怀疑存在支气管异物。超声检查有助于排除胸腔积液的存在，当支气管内充满液体时，甚至可能显示出支气管扩张。
