Mesothelioma and Lung Cancer

Pleural mesothelioma and lung cancer are both serious illnesses, but they are not the same. Pleural mesothelioma – sometimes called “asbestos lung cancer” – is really not a form of lung cancer, but a cancer of the lining that surrounds the lung.

A main difference between lung cancer and mesothelioma is that lung cancer is in the tissue of the lung. By contrast, pleural mesothelioma occurs in the lining around the lung.

Smoking is often considered a primary cause of lung cancer, while asbestos exposure is considered a primary cause of mesothelioma. Asbestos exposure may also be associated with lung cancer. Smoking is not linked to mesothelioma, however. Those exposed to asbestos and who smoke are as much as 90 times more likely to be develop lung cancer than those who don’t smoke.

Mesothelioma and Asbestos

Mesothelioma is a rare form of cancer caused by exposure to asbestos. Asbestos is a naturally-occurring fiber that, when released into the air, can be inhaled or swallowed. Asbestos has no smell or taste, and asbestos fibers are so small that they are not visible to the naked eye. Asbestos fibers can “stick” in the lung, abdomen and other body tissues and over time, lead to the development of asbestos-related diseases like mesothelioma. There is a long latency period between asbestos exposure and the development of mesothelioma; in other words, decades may pass after a person’s first exposure to asbestos before he or she becomes ill. A person who has been diagnosed with asbestosis (a non-cancerous scarring of the lungs) is at an increased risk of developing mesothelioma in the future.

Millions of people in the U.S. have been exposed to asbestos, and it is estimated that approximately 3,000 people are diagnosed with mesothelioma each year. In these pages, you will read about asbestos and the common ways in which people have been exposed to asbestos.