What is radiation therapy?

Radiation therapy is a localized treatment employed typically following a lumpectomy and, in some cases, a mastectomy. High-intensity x-rays are directed in many small dosages to the entire breast area, as a means to destroy any carcinogenic cells that could remain in the breast following surgery. X-rays penetrate through the breast cells and cause damage to the cellular DNA thus inhibiting the ability of any remaining breast cancer cells to further replicate.

Topic: 
Radiation Therapy