Lung cancer is one of the most common cancers in the world. It is the leading cause of cancer death among men and women in the United States. Cigarette smoking causes most lung cancers. A greater number of cigarettes they smoke daily newspapers and the younger you start smoking, the greater the risk of developing lung cancer. Exposure to high levels of pollution, radiation and asbestos can also increase the risk.

Common symptoms of lung cancer include:

1. A cough that does not go away and worsens over time
2. Constant chest pain
3. Cough with bloody sputum
4. Shortness of breath, wheezing or hoarseness
5. Repeated problems with pneumonia or bronchitis
6. Loss of appetite or weight loss
7. Fatigue

There are many types of lung cancer. Each grows and spreads differently and treated differently. Treatment also depends on the stage or how far along you are. Treatment can include chemotherapy, radiation and surgery.

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Radiotherapy is the use of high energy ionizing radiation in order to stop the growth and division of cancer cells in the area where they are used. It is used as local therapy (in the area where the tumor) or locoregional therapy (when including also the nodes near the tumor).

In the case of lung cancer, external radiation is applied, ie, radiation is administered from the outside by a radiation-generating equipment (linear accelerator). The advantage of external beam radiation is not require admission to hospital or is painful for the patient, and is managed by specialists in radiation oncology.

Social relations, labor and patient’s family need not be affected by the fact be receiving this therapy. With external beam therapy radiation is not apparent at any time during or after treatment. Thus, once the daily treatment, the patient may be in contact with others, does not emit any radioactivity.

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