Nephrometry Scoring System Selects Candidates for Radical Nephrectomy Versus Nephron Sparing Surgery for Treatment of Renal Masses and Predicts Surgical and Oncological Outcome

Background: In the past, management of renal masses was based on surgeon's own experience and preference till the innovation of RENAL scoring system.Objective: To ensure the sensitivity of preoperative application of RENAL scoring system on patients havingrenal tumors and to assess correlation with the surgical technique.Design, Setting, and Participants: Controlled Clinical Trial with combined prospective and retrospective study of 85 patients using the non-probability convenience sampling, open and laparoscopic Radical\Partial nephrectomy are the standard of care for management of renal tumors. R.E.N.A.L. nephrometry scoring system was applied preoperatively on all the renal mass lesions on the CT films and on the excised specimens postoperatively during the period between January 2018 and April 2019, Patient selected to be operated upon must be diagnosed to havesolid/cystic renal tumor.Inclusion Criteria: Resectable renal tumors' patients Fit for anesthesia and for standard open surgical procedures with no distant metastasis.Exclusion Criteria: Medical problems hinders anesthesia and Advanced metastatic tumors.Surgical Procedure: Standard open and laparoscopic radical and nephron sparing surgery (NSS). Outcome measurements and statistical analysis: Utility values for RENAL system when applied on solid and cystic renal mass lesions and its sensitivity by comparison its application on the CT films and on the specimens