Life-threatening causes of<unk>  include pulmonary embolism. Common causes of<unk>  include bronchiectasis, acute respiratory tract infections, chronic obstructive pulmonary disease, bronchitis, pneumonia, lung cancer, tuberculosis, cystic fibrosis, and idiopathic. Less common causes of<unk>  include ruptured aneurysms, lung abscess, aspergilloma, idiopathic pulmonary fibrosis, behçet's disease, aortobronchial fistula, pulmonary endometriosis, goodpasture syndrome, and foreign body aspiration.
Hemoptysis causes
Pleural effusion causes
Hemothorax causes
Lung abscess causes
Pleurisy causes
Bronchitis causes
Mediastinitis causes
Aspiration pneumonia causes