Tubeless Percutaneous Nephrolithotomy Without Reverse Insertion of a Ureteral Catheter

This study compares two methods of a kidney stone surgery (PCNL) to see if a version that skips inserting a ureteral catheter before the procedure is just as effective. The goal is to simplify the surgery and reduce patient discomfort without compromising outcomes. You may be eligible if: - You are 18 to 80 years old - You meet the criteria for PCNL kidney stone surgery - You agree to have the tubeless version of the surgery - Your kidney stone is less than 3.5 cm in diameter You may NOT be eligible if: - Your CT scan or bloodwork shows you have infectious or complex staghorn stones - You have severe heart, lung, or blood clotting problems that make surgery risky - You have previously had PCNL or open kidney stone surgery, or have a stent or drainage tube in place - You have a kidney injury or congenital abnormality of the urinary tract Talk to your doctor to see if this trial is right for you.