(UroToday.com) In the United States, cancers of the kidney and renal pelvis comprise the 6th most common newly diagnosed tumors in men and 10th most common in women, with new diagnoses exceeding 65,000 patients annually. For patients with large or locally advanced renal tumors, radical nephrectomy (RN) is a commonly used treatment approach. Perioperative mortality ranges from 0.5-3.6%. Mortality risk scores have been derived and validate for patients undergoing radical cystectomy while no such predictor is available for patient-level risk prediction for patients undergoing radical nephrectomy. Below is the prior work among patients undergoing radical cystectomy.