My husband has a cancerous polyps about 1.5 inches in diameter and a precancerous polyps that is less than 1 inch in diameter in his sigmoid colon. His Oncologist is recommending that he get surgery to remove a part or all of his sigmoid colon that is cancercous. This will require 3 - 5 days in the hospital and 2 days of being on a liquid diet before the sugery. I heard that radiation therapy can now be used for colon cancer? Is it true? Would it be a good option in my husband's case?