Mesothelioma and Asbestosis Two lung diseases are connected to exposure to asbestos fibers mesothelioma and asbestosis. Mesothelioma is a kind of cancer, while asbestosis is a non-cancerous illness that causes scarring and stiffness in the lungs. Both diseases share similar symptoms, including breathlessness. Doctors diagnose mesothelioma through tests, including biopsy. https://vimeo.com/704915664