Mesothelioma, a form of cancer, is caused by exposure to asbestos. This exposure often occurs in the workplace, or through exposure to someone who works around asbestos. Mesothelioma is a deadly disease, nearly impossible to treat. By the time it is recognized, it is often too late to develop an effective treatment plan. Mesothelioma attacks the lining of organ tissue, forming fluid and tissue mass and affecting organ function. Surgery and radiation treatment can sometimes improve life expectancy for Mesothelioma patients, but the disease is nearly always fatal.
Cancerous (malignant) cells 
develop in the protective lining the surround the body’s internal organs, known as the mesothelium. The cancer most commonly develops in the pleura, which is the outer lining of the chest cavity. It also occurs, however, in the lining of the abdominal cavity, known as the peritoneum, and the sac that surrounds the heart, which is called the pericardium.
