Mesothelioma Mesothelioma is a type of cancer that develops in the linings that surround organs. It usually affects the lungs (pleura) but it can also affect the abdomen's lining (peritoneum), heart or testicles. Mesothelioma is a result of asbestos fibre exposure. Typically, symptoms don't appear until decades after exposure. Signs https://vimeo.com/704720833