Colorectal Cancer Radiation Therapy

Radiation therapy is not a common way to treat colon cancer, though it may be used in certain circumstances. Radiation therapy, with chemotherapy, is frequently used in the adjuvant or neoadjuvant setting for the treatment of rectal cancers, whereas chemotherapy alone is more common for the auxiliary and neoadjuvant treatment of colon cancers. Throughout radiation therapy, high-energy x-rays are used to kill cancer cells. In advanced stages of colon cancer, radiation therapy is often given alternatively of surgery when an operation cannot be performed.