Mesothelioma Mesothelioma is a type of cancer that grows in the linings of organs. It usually affects the lungs (pleura) but can also affect the lining of the abdomen (peritoneum) and heart, as well as the testicles. Mesothelioma is caused by asbestos fibre exposure. Typically, symptoms don't appear until decades https://vimeo.com/705001198