Case report: infantile sub-lobar emphysema and tracheal bronchus.

Localised disturbance of aeration in children is as often the result of mucosal swelling due to infection as resulting from an inhaled foreign body. The present report adds another cause: tracheal bronchus. Elucidation of this cause of localised disturbance of aeration usually includes bronchoscopy, the anesthesia and direct trauma involved being highly undesirable if i infection is the cause. The case for limited, careful bronchography, before or instead of bronchoscopy, when the history of foreign body is lacking is presented.