Mesothelioma and Asbestosis Two lung diseases are connected 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 breathlessness. Doctors diagnose mesothelioma by running tests, including a biopsy. Symptoms https://vimeo.com/704895239