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Thursday, November 20, 2008

Lung cancer

Thursday, November 20, 2008
More than a million people around the world are diagnosed with lung cancer every year. The number is simply startling! As such it is best to identify the cancer early and prevent it in the best way possible. Lung cancer is a disease of uncontrolled cell growth in tissues of the lung. This growth may lead to metastasis, which is invasion of adjacent tissue and infiltration beyond the lungs. The most common cause of lung cancer is long-term exposure to tobacco smoke. The occurrence of lung cancer in non-smokers, who account for as many as 20% of cases, is often attributed to a combination of genetic factors, radon gas, asbestos, and air pollution, including secondhand smoke. During the disastrous 9/11 event, many of the New York firemen suffer from chest illnesses including lung cancer due to high asbestos content in the smoke around GROUND ZERO area.

Lung cancer may be seen on chest x-ray and computed tomography (CT scan). The diagnosis is confirmed with a biopsy. This is usually performed via bronchoscopy or CT-guided biopsy. Treatment and prognosis depend upon the histological type of cancer, the stage (degree of spread), and the patient’s performance status. Possible treatments include surgery, chemotherapy, and radiotherapy. With treatment, the five-year survival rate is 14%.The most common lung cancer symptoms experienced are :

* Onset of wheezing
* Recurrent pneumonia or bronchitis
* Shortness of breath
* A persistent cough that does not go away

MAIN CAUSES OF LUNG CANCER:

Tobacco use is the world’s leading cause of lung cancer. Secondhand smokers are also exposed to this dangerous risk. If you live with a smoker, you have 2 to 3 times the risk of developing lung cancer compared with a person who lives in a non-smoking environment.

There are other causes of lung cancer in the environment, but their effect on lung cancer rates is small compared to the effect of cigarette smoking. Other things that increase your risk of lung cancer include asbestos and radon exposure. Certain occupations, such as mining and farming, expose people to fumes, radioactive dust, or other chemicals that may be harmful.

PREVENTION

Beta Carotene: Studies show that heavy smokers who avoid taking BETA CAROTENE supplement can lower the risk of lung cancer compared with smokers who do take beta carotene.

Diet and Physical Activity: Studies show that a diet rich in fruit, and possibly vegetables, may help lower the risk of lung cancer, while heavy alcohol drinking may increase the risk of lung cancer.



3 comments:

kaileesteven01 said...

Lung cancer is caused by uncontrolled rapid growth of cells in tissues.The risk of lung cancer increases with the number of cigarettes smoked over time.

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diaaneray said...

Lung cancer is a growth of malignant cells in the lungs.This deadly disease has grown to claim more lives than the other cancers combined.

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wew said...

wow,i like it.amazing.thank you.sir.