The renal functional outcome after kidney surgery is of utmost importance since it affects overall survival and recent studies suggest its implication in cancer-specific survival as well.1,2 Additionally, it also profoundly affects a patient’s quality of life. In fact, the renal function, as a result of kidney surgery, can precipitate ultimately leading to dialysis. Thus, when counseling patients regarding surgery on such a delicate organ, urologists have to take into account several factors.