Mesothelioma Mesothelioma is a form of cancer, occurs in the organ linings. It is most commonly found in the lungs (pleura) but it can also affect the abdominal lining (peritoneum) as well as the heart or testicles. Exposure to asbestos fibres is the cause of mesothelioma. Typically, symptoms don't appear https://vimeo.com/703533134