Mesothelioma Mesothelioma is a type of cancer that develops in the linings that cover organs. It usually affects the lung (pleura) but it can also affect the abdominal lining (peritoneum), heart or testicles. Mesothelioma is a result of asbestos fibre exposure. Typically, symptoms don't appear until decades after exposure. Symptoms https://vimeo.com/704975995