The Cold Ischemia Robot-assisted Partial Nephrectomy

This study is examining a technique called "cold ischemia" used during robot-assisted partial kidney removal surgery, where the kidney is cooled to protect it while part of it is removed. Researchers want to evaluate outcomes and safety of this approach. **You may be eligible if...** - You are between 18 and 80 years old - You are scheduled to undergo robot-assisted partial kidney removal (partial nephrectomy) **You may NOT be eligible if...** - Your anesthesiologist has determined you are not safe for general anesthesia - You have severe heart or stroke-related disease - You have a horseshoe kidney (a kidney abnormality where both kidneys are fused) - You are pregnant Talk to your doctor to see if this trial is right for you.