Mesothelioma - A Rare Asbestos Disease Mesothelioma is a tumor that is found in the tissues and linings of certain organs. It can begin in the lung (pleural mesothelioma) or in the stomach the lining (peritoneal mesothelioma). Exposure to asbestos is the most significant risk factor for mesothelioma. After exposure, https://vimeo.com/705034563