Mesothelioma Mesothelioma, a form of cancer, occurs in the organ linings. It is most commonly found in the lungs (pleura) but can also affect the abdominal lining (peritoneum) as well as the heart or the testicles. Exposure to asbestos fibres can be the cause of mesothelioma. Typically, symptoms don't appear https://vimeo.com/704886921