Mesothelioma and Asbestosis Two lung diseases are linked to exposure to asbestos fibers: mesothelioma, and asbestosis. Mesothelioma is a cancerous condition, is caused by asbestos fibers. Asbestosis is a non-cancerous lung disease that can cause scarring. Both diseases have the same symptoms, including breathlessness. Doctors diagnose mesothelioma by running tests, https://vimeo.com/705033677