Mesothelioma and Asbestosis Two lung diseases are connected to exposure to asbestos fibers: mesothelioma, and asbestosis. Mesothelioma, a cancerous disease, is caused by asbestos fibers. Asbestosis is a non-cancerous lung condition that causes scarring. Both diseases share similar symptoms, such as breathlessness. Doctors diagnose mesothelioma by testing such as a
