Also I believe that mesothelioma is a unusual form of most cancers that is commonly found in those people previously subjected to asbestos.  Cancerous cellular material form while in the mesothelium, which is a protective lining that covers a lot of the body's internal organs. These cells ordinarily form while in the lining with the lungs, mid-section, or the sac that really encircles the heart. Thanks for discussing your ideas.