I really need some information. My father was diagnosed with prostae cancer 3 months ago and in the course of trying to diagnose the prostate cancer they found 2 lesions on my dad's left kidney. The largest one is 2 1/2 inches. He has had many kidney stones and UTI's. The Dr.'s are saying they cannot definately say if it is cancer or scar tissue. They say there is no definate tests available and the only way to be certain is to go in and take the kidney out and then diagnosee wether cancer is present or not. They cannot treat the prostate cancer until the kidney situation is addressed.  My mother passed away 10 months ago and I just cannot face another loss like that right now. I want to help him but the info. we get seems to contradict other info. we have gotten. Basically, my primary question is that I want to know if we have been correctly informed that there is no way to be certain if the kidney lesions are cancer until after the kidney is taken out? They have already done a CAT SCAN and one Dr. wanted to do an MRI then suddenly another Dr. on his cancer team stood up and said it does not matter what an MRI will show because we still will not know. Is that a true statement?