Rectal Cancer (cont.)
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Other Therapy for Rectal Cancer
Radiation therapy uses high-energy rays that are aimed at the cancer cells to kill or shrink them. For rectal cancer, radiation therapy may be used either before surgery (neoadjuvant therapy) or after surgery (adjuvant therapy), usually in conjunction with chemotherapy.
The goals of radiation therapy are as follows:
Typically, radiation treatments are given daily, five days a week, for up to six weeks. Each treatment lasts only a few minutes and is completely painless; it is similar to having an X-ray film taken.
The main side effects of radiation therapy for rectal cancer include mild skin irritation, diarrhea, rectal or bladder irritation, and fatigue. These side effects usually resolve soon after the treatment is complete.
Chemotherapy and radiation are often given for stages II and III rectal cancer. Preoperative chemotherapy and radiation are sometimes performed to decrease the size of the tumor.
Medically Reviewed by a Doctor on 7/22/2015
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