It is cancer that is caused by asbestos. It occurs most commonly inlining of the abdomen or the lungs. The average life span for this mesothelioma cancer is 18-31months from diagnosis, but the diagnosis may recover with treatment. Asbestos is only the exact cause of mesothelioma. When these asbestos fibers are in-digested or inhaled they may become inserted into the lining of the heart, lungs, or abdomen. Over time the fibers can cause carrying and inflammation. This irritation can lead to the development of mesothelioma tumors based on the location. The major common tumors are three and are made up of different cell types.