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In tracheobronchitis, areas of the tracheal or bronchial wall become inflamed and swollen, causing the air passageway to narrow.

In tracheobronchitis, areas of the tracheal or bronchial wall become inflamed and swollen, causing the air passageway to narrow.
In tracheobronchitis, areas of the tracheal or bronchial wall become inflamed and swollen, causing the air passageway to narrow.