Mesothelioma and Asbestosis Mesothelioma and asbestosis are two lung diseases linked to exposure to asbestos fibers. Mesothelioma is a form of cancer, while asbestosis is a non-cancerous illness that causes scarring and stiffness in the lungs. Both diseases have the same symptoms, like breathlessness. Doctors diagnose mesothelioma by running tests, https://vimeo.com/704943241