Hello. This is my first time here. The Urologist told me today that from my ct scan he is almost certain my tumor is cancer, but it looks like it has not spread. He said he can't be 100% sure until the post-op pathology report. It is about the size of a softball. The last two months have had my head spinning and some of it doesn't make sense. It started with my being sent to a Nephrologist because a couple of blood tests said my creatnine was a little high. The Nephrologist did more blood tests, urine tests, and ultrasound. He then says that the ultrasound shows both kidneys are a little smaller than normal and show signs of past disease, but didn't think anything was actively going on. Come back in 6 months. A couple of weeks later I start having severe pain on my left side and had trouble swallowing. The gastroenterologist does an endoscopy and ct scan, then calls me last week to say the ct scan showed a large tumor on my right kidney even though my pain is on my left side. So, I go to the Urologist who shows me the scans and how big it is. I ask how the ultrasound from 2 months before could have missed it. He didn't know. So my right kidney went from being too small to being huge in 2 months? The Urologist also says my creatnine looks good. He says my kidneys are functioning at around 60% which he says is ok for my age. But, a little later he says that after surgery, my one kidney will probably be at about 70%. I'm so confused. Fortunately the left side pain I have had for a few weeks has disappeared. Don't know what that was. I still can eat very little but the Urologist says I'm so small and the tumor is so big, it may be putting pressure on other organs so that may have something to do with it. I still can't get over the ultrasound/creatnine discrepancies. Who are you supposed to believe?