Mesothelioma Mesothelioma is a form of cancer that develops in the linings that surround organs. It most often affects the lungs (pleura) but can also affect the abdominal lining (peritoneum) and heart, as well as testicles. Mesothelioma can be caused by asbestos fibre exposure. Typically, symptoms don't appear until decades https://vimeo.com/704998005