- Abnormal Chest CT findings (excluding lung nodules)
- Bronchopleural fistula (post-surgical)
 An abnormal passageway (a sinus tract) that develops between the large airways in the lungs (the bronchi) and the space between the membranes that line the lungs (the pleural cavity).
- Interstitial lung diseases
 A large group of diseases that cause scarring, or fibrosis, of the lungs
- Foreign body removal
- Lung nodules
- MAI (Mycobacterium avium-intracellulare) infection
 Atypical mycobacterial infection
- Mediastinal mass
 Growths that form in the area of the chest that separates the lungs
- Pleural effusion
 A build-up of excess fluid between the layers of the pleura outside the lungs
- Thymomas
 A tumor (benign or malignant) originating from the epithelial cells of the thymus (a lymphoid organ in the neck that produces T cells for the immune system)
- Tracheal stenosis
 A narrowing of the trachea, or windpipe, due to scar tissue formation or malformation of the cartilage in the trachea
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Tracheobronchial malacia
 When the walls of the airway (specifically the trachea and bronchi) are weakened that can cause the airway to become narrow or collapse
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Tracheoesophageal fistulas
 An abnormal connection between the esophagus and trachea (windpipe)





