Lung Cancer

Lung Cancer

Lung Cancer is the leading cause of cancer deaths in the U.S. among men and women, and most of these deaths are preventable.  That’s because about 90 percent (9 out of every 10) of all lung cancers are caused by smoking. A key reason is that tobacco smoke contains more than 4,700 chemicals, 40 0f which are cancer-causing, or carcinogens. Cigarettes also contain more than 30 toxic metals such as nickel, cadmium, and radioactive substances.

While lung cancer used to be mostly a disease of men, as more women became smokers, more developed lung cancer. Smoking is also associated with emphysema, heart disease, stroke, and other cancers and diseases.


Risk Factors for Lung Cancer
Symptoms of Lung Cancer
Diagnosis and Treatment of Lung Cancer
Difference between Primary and Secondary Lung Cancer








Risk Factors for Lung Cancer

Cigarette Smoking
Secondhand smoking (also called passive smoking), which results from being in the environment of smokers, even if one is a non-smoker.
Being African-American because they are at a higher risk of developing lung cancer.
Asbestos exposure, which is associated with an increased risk of a type of lung cancer called mesothelioma.
Other industrial carcinogens (cancer causing substances).
Radon gas – an odorless gas that’s released into the air from the breakdown of uranium in the soil and water. It’s a good idea to have the home checked for radon, especially if one lives in an area where high radon levels often occur.


Symptoms of Lung Cancer

By the time a person with lung cancer develops symptoms, the cancer is often advanced.

However, the symptoms of lung cancer are:

Chronic cough
Weight loss and loss of appetite
Shortness of breath
Fever of unknown cause
Repeated periods of bronchitis or pneumonia
Chest pain
Although the above symptoms may be caused by other conditions, anyone who develops one or more of them should see his/her doctor without delay.
Diagnosis and Treatment
Diagnosis of Lung Cancer 
  1. Examination of the sputum for cancer cells;
  2. Chest X-ray
  3. CT (‘cat’) scan
  4. Bronchoscopy, where a small tube is inserted down the throat to look at the airways, or do a biopsy.
Treatment of Lung Cancer
There is a variety of treatments for lung cancer, and they may be used alone or in some combination.  Treatments include:
  • Surgery
  • Radiation Therapy
  • Chemotherapy
Difference between Primary and Secondary Lung Cancer
Primary lung cancer starts in the lung and is almost always due to cigarette smoking. With secondary lung cancer, the cancer spreads from other areas of the body, which is called metastasis. Cancers which spread to the lung include cancer of the breast, colon, prostate, testicle, kidney, thyroid and bone. However, in these cancers, they are still called by the name of the organ or area where it started, instead of lung cancer.
Want to Quit Smoking?  Check out Health Power’s Tip sheets.  Other information related to lung cancer ans smoking cessation are provided by the American Cancer Society, National Cancer Institute, and American Lung Association.
The Websites of all three of these organizations are all just one click away from our Resource Directory.