| Airway disease |
| Emphysema |
| Cystic fibrosis |
| Severe asthma |
| Infectious lung disease |
| Pneumocystis carinii pneumonia |
| Tuberculosis |
| Necrotising pneumonia |
| Interstitial lung disease |
| Idiopathic pulmonary fibrosis |
| Sarcoidosis |
| Histiocytosis X |
| Lymphangioleiomyomatosis |
| Connective tissue disease |
| Rheumatoid arthritis, scleroderma and ankylosing spondylitis |
| Marfan's syndrome |
| Ehlers Danlos syndrome |
| Malignant disease |
| Lung cancer |
| Sarcoma |