Mesothelioma Mesothelioma is a type of cancer, occurs in the linings of organs. It is most commonly found in the lung (pleura) but can also affect the abdomen's lining (peritoneum), heart or testicles. Exposure to asbestos fibres is the main cause mesothelioma. Typically, symptoms don't appear until decades after exposure. https://vimeo.com/704906352