Lung Cancer

lung-cancer Lungs exchange the gases between the blood and the air (we breathe in). They help to remove carbon dioxide from the blood stream besides supplying oxygen from the air (we breathe in) to the blood stream.

Lung Cancer is a life threatening disease. It results from the abnormal growth of cells in lungs. Abnormal cells in the lungs proliferate at a fast pace when compared with normal lung tissue cells resulting in the formation of tumors. Such tumors disrupt normal functioning of lungs. Tumors are classified into benign tumors and malignant tumors. Benign tumors would result in bleeding and discomfort. They do not spread to other parts of the body and can be easily removed. On the other hand, malignant tumors spread to other parts of the body destroying normal tissues. Lung Cancers are also called bronchogenic cancers or bronchogenic carcinomas. Lung Cancers, which develop in the pleura, are known as mesotheliomas.

Lung cancer may begin in any part of the lungs or respiratory system and takes long time to develop. It generally affects the people aged between 55 and 65 years. Cancer cells can spread to tissues in the chest apart from spreading to liver, brain or bones. About 90-95% of lung cancers begin from the epithelial.

Several people including men and women across the world die because of lung cancer. Fresh lung cancer cases in the US are estimated at 215021 in 2008. People aged above 65 years are generally diagnosed with lung cancer in the US.

Lung cancer saw a phenomenal growth due to increased smoking of tobacco since 1930.

Lung cancer is declining gradually in developing nations with improved public awareness about the dangers of cigarette smoking. Lung cancer deaths are more predominant in the US.

Causes for Lung Cancer

More than 90% of lung cancer cases are due to increased smoking of tobacco. People are advised not to smoke to reduce the risk of lung cancer. People, who smoke more, are likely to suffer from lung cancer. People, who are addicted to cigarette and pipe smoking, may also suffer from lung cancer. Tobacco consists of more than 4000 chemical compounds, which may cause cancer.

Passive smoking would also result in lung cancer. It is estimated that 3000 people die in the US due to passive smoking every year.

People, who are exposed to asbestos fibers, are likely to suffer from lung cancer.

Radon gas, which is released from uranium, would also cause lung cancer.


Symptoms of Lung Cancer include weight loss, breathlessness, cough, chest pain and swollen fingertips. Endoscopic examination of the lungs would help to detect lung cancer.

Consult your physician at the earliest to cure lung cancer. Treatment may vary depending on the severity and type of lung cancer.