Severe Iatrogenic Ureteral Avulsions Caused by the Ureteroscopic Procedures / 대한비뇨기과학회지

ABSTRACT

PURPOSE: We reviewed the incidence, causes, location, treatment and prognosis of the severe iatrogenic ureteral avulsions caused by ureteroscopy procedures. MATERIALS AND METHODS: We analyzed the records of eight patients with ureteral avulsion out of 683 patients treated with ureteroscopic procedures, retrospectively. The patients had surgical correction or ureteral double-J stenting for the iatrogenic ureteral avulsions. RESULTS: The incidence of ureteral avulsion was 1.17%. While seven cases occurred during ureteroscopic removal of a stone, five cases among them occurred during stone basketing and two cases occurred during insertion of the ureteroscope. Another case among eight avulsion cases occurred while removing the during an endopyelotomy for a ureteral stricture. Depending on the length of the ureteral avulsion, four cases were over 2cm, the patientsopen surgical repair for ureteral continuity restoration immediately; three cases, under 2cm, were treated with indwelling ureteral double J stents, and one case with an injury to the entire ureter was treated with a nephrectomy. The result of the surgical treatment as the initial treatment was good in all cases. On the other hand, among the three cases with an inserted ureteral double-J stent, one case had aresult and the other two developed hydronephrosis. CONCLUSION: Careful attention to surgical techniques and awareness of risk factors and types of potential injuries are essential to reduce severe iatrogenic ureteral avulsions. Our reports suggest that open surgical repair is better than an indwelling ureteral double-J stent for patients with a ureteral avulsion.