Airway involvement of tuberculosis is manifested as tracheal or bronchial stenosis. Chest X-ray features are indirect signs of stenosis including lobar atelectasis or mucoid impaction 1.
CT may demonstrate wall thickening, complete obstruction, or obstruction due to adjacent adenopathy. CT may differentiate from endobronchial carcinoma by demonstration of long segment narrowing without internal mass 2.
Bronchial stenosis is seen in 10-40% of patients with active TB 3.