What is already known about this topic?
The effect of presurgical ESWL on the efficacy and safety of semirigid ureteroscopy was shown in some studies. These studies reported that the presurgical ESWL did not complicate the semirigid ureteroscopy and did not increase the complication rate. On the other hand, with the evolution of technology retrograde intrarenal surgery became a standard procedure for patients with upper ureter stones. There is a significant gap in the literature defining the effect of pre-RIRS ESWL on the efficacy and safety of at RIRS for upper ureter stone treatment.