title: An endourologic approach to complete ureteropelvic junction and ureteral strictures.
abstract: OBJECTIVE
  Complete stricture of the ureteropelvic junction (UPJ), ureter, or both represents a secondary upper tract obstruction and is a challenge for surgical management. The endourologic repair of these complete strictures remains controversial because of the many unsatisfactory results in the literature. The aim of this study was to achieve recanalization of the ureter or the UPJ using endourologic techniques to prove durable success of this technique.
  
  
  METHODS
  We present data on the 21 patients with complete UPJ or ureteral strictures treated over 5-year period. The length of the obliterated portion of the ureter or UPJ ranged from 0.3 to 1.7 cm. The stricture was at the UPJ level in 12 patients (57%), in the upper ureter in 3, and in the lower ureter in 4. The technique was a combined approach, with antegrade introduction of the guidewire and retrograde cold-knife incision in the majority of the cases. In five cases, the incision was carried out in the reverse direction with a guidewire introduced retrograde up to the stricture level. An originally designed 6F to 7F polyethylene double-J stent with a movable 12F to 16F silicon sheath or percutaneous tube was placed at the completion of the procedure.
  
  
  RESULTS
  The follow-up period ranged from 6 to 48 months. Recanalization was achieved in 17 patients (81%), of whom 14 became symptom free. Other surgical outcomes necessitated open surgical intervention (pyeloplasty, nephrectomy) in two patients. One patient developed a clinically significant recurrent urinary tract infection and deterioration of kidney function. Thus, the overall success rate of the endourologic management of the complete UPJ and ureteral strictures was 67% in our series.
  
  
  CONCLUSIONS
  Endourologic management with retrograde or antegrade pyeloureterotomy can be successful in patients with short (up to 1.0-cm) obliterative strictures who are without extensive hydronephrosis and with preserved renal function.
authors: Institute of Urology, Moscow, Russia.
authors: N A
authors: NA
authors: Lopatkin
authors: A G
authors: AG
authors: Martov
authors: B L
authors: BL
authors: Gushchin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001672:Biocompatible Materials; D002648:Child; D005260:Female; D006801:Humans; D007682:Kidney Pelvis / Q000000981:diagnostic imaging / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011140:Polyurethanes; D019919:Prosthesis Implantation / Q000295:instrumentation; D015607:Stents; D014513:Ureter / Q000000981:diagnostic imaging / Q000601:surgery; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging / Q000601:surgery*; D018666:Ureteroscopy / Q000379:methods*; D014567:Urography
chemical_list: D001672:Biocompatible Materials; D011140:Polyurethanes