Radiation Therapy

In standard therapy, a machine delivers radiation to the breast and in some cases to the lymph nodes in the armpit. The usual schedule for radiation therapy is 5 days a week for 5 to 6 weeks. sometimes a "boost" or higher dose of radiation is given to the area where the cancer was found.

During treatment planning, your chest area will be marked with ink or with a few long-lasting tattoos. These marks need to stay on your skin during the entire treatment period. The mark where the radiation is aimed.

Possible problems: Side effects may include feeling more tired than usual and skin irritations, such as itchiness, redness, soreness, peeling, darkening, or shininess of the breast. Radiation to the breast DOES NOT cause hair loss, vomiting, or diarrhea. Long-term changes may include changes in the shape and color of the treated breast, spider veins, and heaviness of the breast.

Radiation after a mastectomy will be suggested if:

• The tumor is larger than 5 cm. (2 inches).

• Cancer is in many lymph nodes in the armpit.

• The tumor is close to the rib cage or chest wall muscles.

Adapted from "A Woman's Guide To Breast Cancer Diagnosis And Treatment" published by the California Department of Health Services and "The Breast Buddy Volunteer Training Curriculum", published by WIN Against Breast Cancer.

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Last Updated: 06/01/2004

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