Carsinoma Doctor

Radiation therapy administered high-energy X-rays that can destroy rapidly multiplying cancer cells. It has many uses in lung cancer:

* As primary treatment
* To reduce the size of the tumor before surgery
* After surgery to remove cancer cells that may have formed on the treated area
* To treat lung cancer that has spread to the brain or other body parts

In addition to attacking the tumor, radiation therapy helps relieve some symptoms such as shortness of breath. As initial treatment instead of surgery, radiation therapy can be given alone or in combination with chemotherapy. Today, many patients with small lung cancer that is accessible by an X-ray beam but are not candidates for surgery, received curative doses of radiotherapy. This group may include the elderly, patients with chronic heart failure, and those who receive blood arralar medications that put them at risk of bleeding during surgery. More recently, greater use is being given a new technique called Stereotactic Body Radiotherapy (SBRT). It involves a multitude of small radiation beams focused tracking the lung tumor in conjunction with breathing movements, usually three to five treatments. This treatment delivers high doses of radiation therapy or lung cancer patients for whom surgery is not an option.

Most of the time the radiation was administered with external beam technique, with which a beam of X-rays directly to the tumor. Treatment is given in a series of sessions, or fractions, usually for six weeks. Some studies have obtained good results and fewer side effects when the total dose of radiation is given in more fractions in a shorter time period. For more details see page of external beam radiation therapy. The three-dimensional conformal radiotherapy is a relatively new technique that is based on three-dimensional image of tumor obtained with computed tomography (CT). This image serves as the target for a beam of high-dose radiation that automatically changes shape and size to match the tumor. This method minimizes radiation exposure to surrounding normal lung tissue.

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