Endurological surgery refers to minimally invasive procedures on the urinary tract during which special instruments are inserted through natural openings or small incisions. These procedures are often used to treat various urinary tract disorders, including kidney stones. “Incisionless” stone surgery generally refers to endourological techniques that do not require external skin incisions. Instead, instruments are inserted into the urinary tract through natural openings such as the urethra or through small incisions inside.