I went to ER today for ovarian pain. They did contrast CT and just happened to find possible mass on left lower kidney. I am very confused by the possible mass part. They did urine test it was fine but they said this texture on my kidney may be mass or could be infection. They put me on antibiotics and wants to rescan in 3 weeks to see if it cleared up. I though contrast CT was pretty clear. How can they not know if it is mass or infection? I have no symptoms of infection what so ever. However last month routine labs showed high creatin levels but doc said we would retest. I am very confused. I take BP medicine with a water pill because of retention have been on it for a couple years. Anyone have any advise? I can not help but wonder if it is kidney cancer.