Radiation therapy, also called radiotherapy, involves the use of high-energy rays to kill cancer cells. Radiation therapy affects the cancer cells only in the treated area. The radiation may come from a machine (external radiation). Some women receive a treatment called intraperitoneal radiation therapy in which radioactive liquid is put directly into the abdomen through a catheter.
Radiation therapy, like chemotherapy, affects normal as well as cancerous cells. Side effects of radiation therapy depend mainly on the treatment dose and the part of the body that is treated. Common side effects of radiation therapy to the abdomen are fatigue, loss of appetite, nausea, vomiting, urinary discomfort, diarrhea, and skin changes on the abdomen. Intraperitoneal radiation therapy may cause abdominal pain and bowel obstruction (a blockage of the intestine).
