Facts about Malignant Mesothelioma Malignant mesothelioma is a rare but fatal disease attributed to exposure to asbestos fibers. Learn more about malignant mesothelioma, causes of mesothelioma, and who is at risk of developing mesothelioma on the pages of this site. Malignant-mesothelioma.com~Site InfoWhoisTrace RouteRBL Check