Mesothelioma and Asbestosis Two lung diseases are related to asbestos fiber exposure: mesothelioma, and asbestosis. Mesothelioma, a cancerous disease, is caused by asbestos fibers. Asbestosis is a non-cancerous lung condition that causes scarring. Both diseases have similar symptoms, including shortness of breath. Doctors diagnose mesothelioma through tests, including a biopsy. https://vimeo.com/703538780