Mesothelioma - A Rare Asbestos Disease Mesothelioma is a cancer that develops in the linings of certain organs. It can start in the lungs (pleural mesothelioma) or the stomach liner (peritoneal mesothelioma). Asbestos exposure is the main risk factor for mesothelioma. It can take decades before symptoms begin to manifest https://vimeo.com/704940810