Mesothelioma Mesothelioma is a type of cancer, is found in the organ linings. It most often affects the lungs (pleura) but it can also affect the lining of the abdomen (peritoneum) and heart, as well as testicles. Mesothelioma is caused by asbestos fibre exposure. Typically, symptoms don't appear until decades https://vimeo.com/704726303