RIRS is absolutely less invasive than older techniques such as PCNL, laparoscopic or open surgery as it can be completely scarless. Because as we enter the kidney passing through the normal urinary tract, there is no need to make any incisions or cuts on skin or holes into the kidney (as in PCNL), as this is followed on how to prevent kidney stones. Moreover, there is a lesser chance of severe bleeding, the stay in the hospital is very short (day-care surgery in most cases), and there is a shorter period of recovery where patients can very soon return to the normal routine.