Mesothelioma Mesothelioma is a kind of cancer that forms in the linings that surround organs. It most often affects the lung (pleura) but 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/705068677