Mesothelioma is a type of cancer most commonly caused by asbestos exposure. The cancer forms in the mesothelium, which is a protective lining that covers such vital internal organs as the lungs, stomach, and heart. Mesothelioma is more precisely called malignant mesothelioma.

Malignant mesothelioma is typically causd by the inhalation or ingestion of asbestos fibers. The fibers become lodged in the mesothelium as they are small enough to get in but cannot escape. Over a period of 15-50 years, the asbestos fibers scar and inflame the tissue, causing cellular damage. This can eventually lead to the development of mesothelioma.

When a person has mesothelioma, a rapid division of cancer cells causes the affected membrane to thicken. This results in fluid buildup in the spaces between the membrane layers in the mesothelium. Tumors form as the cancerous cells continue to divide and grow.

Mesothelioma can be induced by industrial exposure to asbestos particles or other types of exposure to asbestos fibers and dust. It is an aggressive type of cancer that can spread to other organs and tissues in the body. There is no known cure of malignant mesothelioma. Typically patients live between twelve to eighteen months after diagnosis.

Detecting mesothelioma at the earliest stages gives the patient the best chance for treating the disease. Symptoms of the cancer may include chest wall pain, shortness of breath, and weight loss. This is caused by the build up fluid between the lung and chest wall from the peritoneal mesothelium, which lines the lungs. Persons who have been exposed to asbestos and have these symptoms seek a doctor immediately.