Foreign body in the bronchus of a child: the importance of making the correct diagnosis

Unilateral hyperlucent lung

“…The most important cause of unilateral hyperlucency/pulmonary hypoattenuation, because of its clinical implications, is partial bronchial obstruction, creating a check-valve mechanism. In children, the main cause is obstruction by foreign body aspiration (FBA) 1 , whereas the main cause in adults is obstruction by neoplastic processes, particularly bronchial cancer. 2 The compromised lung may be with normal or hyperinflation.…”

Primary tracheobronchial amyloidosis

“…Chest CT has been shown to be the imaging exam of choice for the evaluation of thoracic diseases ( 6 - 9 ) , as well as for that of diseases of the tracheobronchial tree ( 10 - 12 ) . In individuals with amyloidosis, a CT scan can reveal smooth or irregular/nodular thickening of the tracheal wall and bronchi, which can be accompanied by calcified nodules in the submucosa ( 4 ) .…”

Plasmacytoma of the trachea: a surprising diagnosis

“…Diseases involving the trachea or the main bronchi are not common ( 1 - 4 ) . Less common still are tracheal tumors, which account for only 1-2% of all respiratory tract tumors ( 5 , 6 ) , affecting mainly the lower third of the tract ( 7 ) .…”