[Probability of development of "steinstrasse" depending on the number of extracorporeal shock wave lithotripsy in ureteral stones].

One of the complications of extracorporeal shock wave lithotripsy (ESWL) is the urethral obstruction by large stone fragments and formation of "steinstrasse". The present study aims at the investigation of the probability of development of "steinstrasse" depending on the number of ESWL sessions in urethral stone treatment. 162 patients with urinary tract stone disease having urethral stones were included in the present study. Based on the results of the present study it is stated, that the probability of formation of "steinstrasse" increases along with the number of ESWL sessions. Therefore, in such cases more intensive follow-up is necessary after ESWL for prompt detection of "steinstrasse" formation and prevention of possible complications.