What is mesothelioma?

Malignant Mesothelioma is a rare form of cancer that starts in the mesothelium, a membrane that covers and protects most internal organs of the body.
The mesothelium is composed of two layers, one surrounding the body itself, and the other forms a sac around it completely. A small amount of fluid is normally produced between these two layers, lubricating the motion of bodies protected.
When normal cells of the mesothelium lose control and spread rapidly, they produce mesothelioma. The form of mesothelioma is the most common mesothelioma "pleural". It occurs in the pleura, the lining of the lungs. Other forms are mesothelioma "peritoneal" reaching the peritoneum lining the abdominal cavity and mesothelioma "pericardial", pericardium, the lining of the heart.