What is Mesothelioma?

Mesothelioma is a form of cancer that is diagnosed in between 2000 and 3000 individuals a year in the United States. It affects the lining of certain internal organs. This lining is known medically as mesothelium.

People who have had a history of exposure to asbestos appear to have the highest risk of developing the disease, although it isn't completely understood why this is the case.

The risk of contracting mesothelioma is approximately twice as great in smokers who are exposed to asbestos.

There is also reason to believe mesothelioma may be caused by a radioactive substance known as thorium dioxide. This substance was often used in conjunction with X-rays during the first half of the 20th century to diagnose various health conditions. It is no longer in use.