There are three variations of Mesothelioma and each has its own symptoms, treatments and area of focus.
The mesothelium is a protective lining which covers the internal organs. In Mesothelioma, malignant cells are formed on this lining. In most cases, the pleura (the outer lining of the lungs and chest cavity) are affected. However, Mesothelioma on the peritoneum (the lining of the abdominal cavity) or the pericardium (the sac surrounding the heart) also occurs. Thus, malignant Mesothelioma cancer is in three main categories based on the organ the mesothelium attacks: Peritoneal Mesothelioma, Pleural Mesothelioma and Pericardial Mesothelioma.