Radiography of the chest revealed hyperinflation of the left lung and the toy whistle which had been obstructing the left segmental bronchus. The New England Journal of Medicine A little boy who ...

In Case 8 the growth was in a segmental bronchus of the left upper lobe, where it could not be demonstrated. In Case 13 there was definite narrowing of the right-lower-lobe bronchus from external ...

The lower respiratory tract consists of the trachea, bronchi and lungs. The air passages are lined with mucous membrane composed mainly of ciliated epithelium. Cilia constantly clean the tract and ...