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 noncancerous condition that causes scarring and stiffness in the lungs. Both diseases have the same symptoms, such as breathlessness. Doctors diagnose mesothelioma by testing, https://vimeo.com/704996565