Asbetosis is a  chronic lung disease induced by the inhalation of asbestos fibers that results in the development of alveolar, interstitial, and pleural fibrosis. Asbestos miners and workers are most frequently affected, but the disease sometimes occurs in other people who have been exposed to asbestos industrial building materials. Chest x-ray films show the characteristic small linear opacities distributed throughout the lungs. Initially patient complain of shortness of breath. The disease is progressive and patient eventually died of  respiratory failure. Cigarette smoking and continuous exposure to asbestos aggravate the condition. Fatal mesothelioma, a cancer of the lung pleural mesothelium, occasionally occur. There is no effective treatment.