What is Mesothelioma?

Mesothelioma, also known as malignant mesothelioma, is a very rare type of cancer which occurs on mesothelium, the protective lining that envelopes most internal organs of the human body and is caused as a result of exposure to asbestos. The condition affects the pleural membrane which is the external lining of the internal chest wall and lungs. It can also affect the peritoneum, pericardium, tunica vaginalis as well as the heart.