Symptoms of<unk>  include chronic sinusitis (inflamed paranasal sinuses), wheezing, crackles (respiratory sounds made by obstructions such as phlegm and secretions in the lungs), dyspnea (shortness of breath), and a severe cough that yields large amounts of sputum (coughed-up phlegm). There may be pus in the sputum, and affected individuals may have fever. Typical signs of<unk>  progression include dilation (enlargement) of the bronchiolar passages and hypoxemia (low levels of oxygen in the blood). If<unk>  is left untreated, bronchiectasis will occur; it is characterized by dilation and thickening of the walls of the bronchioles, inflammatory damage to respiratory and terminal bronchioles, and pooling of mucus in the lungs.<unk>  is associated with progressive respiratory failure, hypercapnia (increased levels of carbon dioxide in the blood), and can eventually lead to pulmonary hypertension (high blood pressure in the pulmonary vein and artery) and cor pulmonale (dilation of the right ventricle of the heart, or "right heart failure").
Diffuse panbronchiolitis
Emphysema
Acute eosinophilic pneumonia
Plastic bronchitis
Cryptogenic organizing pneumonia
Eosinophilic bronchitis
Hypersensitivity pneumonitis
Mineral dust airway disease