Mesothelioma Colon Cancer Mesothelioma (me-zoe-thee-lih-O-muh) Develops in the lining that protects body cavities and organs. The chest cavity's lining (called the pleura) is the most common mesothelioma-related site. Other, rarer forms of mesothelioma can develop in the lining around the heart or in the abdomen. Doctors diagnose mesothelioma with imaging https://www.i-hire.ca/author/robertlocust5/