Mesothelioma.US, is an authoritative and comprehensive resource for mesothelioma patients and their families. Mesothelioma is a cancer that attacks the lining of the lungs (pleural mesothelioma), stomach (peritoneal mesothelioma) or heart (pericardial mesothelioma). This rare form of cancer is caused by exposure to asbestos. This website includes up-to-date information about Mesothelioma, Treatment Options, major U.S. Cancer Centers, Government Clinical Trials, and Veterans Claims & Benefit information.