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Radiation therapy is a very important modality in treating breast cancer.
And this really was a major breakthrough for us in breast conservation surgery. It's a very important modality. There are some instances when a woman still has a mastectomy done, and in some of those cases radiation therapy might be added after mastectomy, particularly if the tumor was larger or many lymph nodes were involved. The radiation treatment in that circumstance helps to decrease the possibility of a local reoccurrence. Most recently, in the treatment of DCIS or very early stage ductal carcinoma in situ, radiation therapy has also been used in addition to surgery in an effort to reduce the need for mastectomy in certain patients.