3 Answers

A tumor that has attached itself around an organ may be too difficult to remove without damaging the organ, or in a location that can't be reached in surgery. Some are in an advanced state where surgery is more risky than the benefits might be.

Early detection, regular screenings, and taking good care of yourself are your best defenses against cancer.

http://www.cancervic.org.au/about-cancer/types-treatments-trials/radiotherapy    Chemo treats a larger area and Radiation treats a localized area..>>>>>>><<<<<<<<..

Usually b/c the tumors  spread  beyond their point of origin. Or / and they're too big and have done to much damage. The Dr. may have found cancer cells in the blood or/ and in urine.. ......or ovaries or in blood stream . In cases like all of the above , they only do radiation or chemo only as a palliative measure.......to make the patient a little more comfortable for the time being. This is what they told me after they investigated my late husband's bladder cancer, which had spread.