Mesothelioma Mesothelioma is a form of cancer, is found in the linings of organs. It most often affects the lung (pleura) but it can also affect the abdominal lining (peritoneum), heart or testicles. Mesothelioma is caused by asbestos fibre exposure. Typically, symptoms don't appear until decades after exposure. Signs and https://vimeo.com/704938781