Mesothelioma Mesothelioma is a kind of cancer that develops in the linings of organs. It most often affects the lungs (pleura) but can also affect the lining of the abdomen (peritoneum) and heart, as well as the testicles. Exposure to asbestos fibres is the cause mesothelioma. Typically, symptoms don't appear https://vimeo.com/704906254