Pleural mesothelioma is the most common type of mesothelioma, a rare cancer that develops in the lungs. It is almost solely caused by exposure to asbestos, which was used in everything in children's toys, house-hold insulation, and naval carriers. Our website has the most up to date and comprehensive information about Pleural Mesothelioma on the web today. We are HON code certified with information ranging from a complete list of symptoms, to treatment options, and steps to take after a diagnosis.