MESOTHELIOMA For those diagnosed with mesothelioma, an asbestos-related cancer of the lining of the lung (pleura) or the lining of the abdominal cavity (peritoneum), finding a credible source of information about the disease itself and the medical options available, is of the highest priority. After years of research and synthesis of information, we have assembled a web site and packet for patients and their loved ones. We hope you find this web site helpful.