Mesothelioma Mesothelioma, a form of cancer, is found in the organ linings. It most often affects the lungs (pleura) but it can also affect the abdominal lining (peritoneum) and heart, as well as the testicles. Exposure to asbestos fibres is the main cause of mesothelioma. Typically, symptoms don't appear until https://vimeo.com/703532462