[Our experience in the endoscopic treatment of ureteral lithiasis. 120 cases of transurethral ureterorenoscopy].

We present our experience over 3 years in the treatment of ureteral lithiasis by means of transurethral ureteroscopy. We analyze the results of our first 120 cases. The percentage of overall successes is 74%, which varies significantly according to whether the calculus is located in the upper or lower third of the ureter and according to the curve of apprenticeship. Iatrogenic problems drop considerably after 50 cases. Rigid transurethral ureteroscopy has become our preferential therapeutic procedure in practically every type of ureteral lithiasis and we have discarded flexible transurethral ureteroscopy for its useless results.