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Lung Cancer Overview
Cells are the building blocks of the body. In order to keep the body hale and healthy, we know very well that cells grow, divide, and proliferate. Sometimes the cells will divide among themselves, although there is no need to multiply and the mass of additional cells forms tumor or cancer. An uncontrolled and rapid growth of lung cells is called Lung cancer.
Lung Cancer is a type of cancer that forms in tissues of the lung, generally in the cells lining air passages. Many lung cancers begin in the bronchi though others can start in other parts of the lungs. Lung cancer also has an inclination to form in the glands below the bronchi.
What is Metastasis?
Generally, Lung cancer develops over a period of years. Many people believe lung cancer is a disease that strikes abruptly, but this is not often the case. There are often areas of pre-cancerous changes in the lung to start with.
These pre-cancerous changes typically progress to an aggressive type of cancer. As a cancer develops new blood vessels form to protect the cancer cells. Eventually, a tumor develops and grows huge enough to observe on x-rays. Once it gets to a certain stage, bits from the tumor cut loose and spread to other parts of the body through the bloodstream or lymphatic system. This development is called metastasis.
Lung Cancer: Deadliest Form of Cancer
Nowadays lung cancer has been recognized as the deadliest form of cancer in many developed nations including USA where 170,000 people die from the disease every year. Although lung changes start almost immediately upon exposure to carcinogens, lung cancer takes years collectively to develop.
Cause of the Lung Cancer
The main scientific study of the cause of the lung cancer is the inhalation of the carcinogens through cigarette smoke by both smokers and non-smokers. When there is an environmental exposure to Radon compounded with smoking, the risk of lung cancer increases. Aside from this, lung cancer is considered to be a work-related hazard amongst the people who are working in asbestos industry, which is termed as mesothelioma lung cancer.
Who are the sufferers of the Lung Cancer?
The main sufferers of the Lung cancer are the people of over fifty and those having the habit of smoking for a relatively long period. The location of the tumor in the lungs is the symptoms of the Lung cancer. The Lung cancer symptoms depend upon the position of the tumor in the lungs. If you are suffering from chronic cough, chest pain, wheezing, and recurring lung injections, you may suspect Lung cancer.
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