Mesothelioma Mesothelioma is a kind of cancer that develops in the linings that surround organs. It most often affects the lungs (pleura) but it can also affect the abdominal lining (peritoneum) as well as the heart or testicles. Mesothelioma can be caused by asbestos fibre exposure. Typically, symptoms don't appear https://vimeo.com/703522325