الفهرس 
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Abstract
Paradoxically, almost all patients who were included in our study and underwent open nephron sparing surgeries lost more blood during and after the surgeries than those who underwent open radical surgeries. So most probably it’s the era of minimally invasive interventions.
Finally, our study has used RENAL scoring system to subdivide patients with solid renal tumors according to them scores into low, moderate and high complexity groups.
We used this system also to settle down and standardize the type of treatment of those patient whether by using nephron sparing or radical surgeries, and the way of intervention whether by using open or minimally invasive options i.e. Laparoscope or robot assisted interventions. Our study predicted the complications by using this scoring system as well.