Mesothelioma and Asbestosis Two lung diseases are linked to asbestos fiber exposure mesothelioma and asbestosis. Mesothelioma is a cancerous illness is caused by asbestos fibers. Asbestosis is a non-cancerous lung condition that causes scarring. Both diseases have similar symptoms, such as breathlessness. Doctors diagnose mesothelioma by running tests, including biopsy. https://vimeo.com/704981654