Mesothelioma and Asbestosis Two lung diseases are connected to asbestos fiber exposure: mesothelioma, and asbestosis. Mesothelioma is a cancerous condition, is caused by asbestos fibers. Asbestosis is a non-cancerous lung illness that causes scarring. Both diseases have similar symptoms, such as shortness of breathe. Doctors diagnose mesothelioma by running tests, https://vimeo.com/704943930