Mesothelioma and Asbestosis Two lung diseases are linked to asbestos fiber exposure: mesothelioma, and asbestosis. Mesothelioma is a form of cancer and asbestosis is a noncancerous condition that causes stiffness and scarring in the lungs. Both diseases share similar symptoms, like breathlessness. Doctors diagnose mesothelioma through tests, including a biopsy. https://vimeo.com/704893303