Metallic self-expandible stenting of a ureteroileal stricture.

Gort, H B; Mali, WP; Waes, P F van; Kloet, Alfred

doi:10.2214/ajr.155.2.2115282

Cited by 49 publications

(20 citation statements)

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“…Even though there are some trials of metalic self-expansible stenting (22) or percutaneous ureterocystostomy and ureteroneocystostomy creating a paraureteral " neotrack" (23) , balloon dilatation and stenting of ureteral strictures in renal transplants is still considered to be a good alternative method without frequent severe complications. Surgical intervention is reserved for patients with failure of balloon catheter dilatatlOn.…”

Section: Resultsmentioning

confidence: 99%

Percutaneous balloon dilatation for transplant ureteral strictures

Kim¹,

Banner²

1993

J Korean Radiol Soc

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-AbstractWe report 10 kidney-allografted patients treated for 11 ureteral strictures with standard endourologic ballon catheter dilatation and internal stenting between August 1979 and December 1991. They have been followed until 2 to 140 months (mean 42). We compared and alalyzed the 6 successful strictures (54%) and 5 unsuccessful strictures. There was no statistically significant difference of demographic, clinical and radiologic interventional techniques between two groups. But there was slightly higher success rate in abruptly narrowed shorter fibrotic strictures in ureteroneocystos tomy sites than smoothly tapered longer ones in other sites of the ureter. Longterm stenting by the transplantation team with cystoscopic removal of internal ureteral stents by urologists resulted in 3 cases of stent occlusion, encrustation or fracture.Exact early diagnosis of ureteral strcture with continued close follow up and proper radiologic interventional procedure with optimal stenting period may increase the success rate and still provide an alternative to surgeη.

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Section: Resultsmentioning

confidence: 99%

Percutaneous balloon dilatation for transplant ureteral strictures

Kim¹,

Banner²

1993

J Korean Radiol Soc

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“…The first use of a metallic ureteral stent was described by Gort et al [3] in 1990. This was applied in a patient with a ureteroileal stricture.…”

Section: Discussionmentioning

confidence: 99%

“…The Memokath 051 (Engineers & Doctors A/S, Hornbaek, Denmark) is a nickel-titanium, thermo-expandable, 'shape-memory' alloy stent suitable for longterm ureteral use and is associated with fewer symptoms compared to the standard JJ stents. The use of a metallic stent in the ureter was first described in 1990 [3] . The first series using retrogradely placed Memokath stents was published by Kulkarni and Bellamy [4] in 1999.…”

Section: Introductionmentioning

confidence: 99%

Use of Memokath 051 Metallic Stent in the Management of Ureteral Strictures: A Single-Center Experience

Papadopoulos

Middela²,

Srirangam³

et al. 2010

Urol Int

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Introduction: Memokath 051® represents a nickel-titanium stent that has been used to treat patients with incurable ureteral strictures. In the current study we present our experience in using this technique. Materials and Methods: Between 2003 and 2008, 19 metallic stents were placed in 13 patients. All of them had been previously treated by using JJ stents or dilatation. The etiology was benign in 10, while in 3 patients malignancy was involved. The mean age was 60.7 years. Mean stricture length was 3.2 cm while the median stent length was 6 cm. No severe complications were noticed postoperatively. Mean follow-up was 14.3 months. Results: Six patients (46%) experienced a satisfactory result after first insertion. Stent migration was observed in 6 patients and in 3 it was replaced successfully. One patient was offered a simple nephrectomy due to a poorly functioning kidney. Eventually, 10 of 13 patients (77%) had a successful outcome after the final stent insertion. Conclusion: Memokath stents suggest a possible alternative in treating chronic/recurrent ureteral strictures. Their most important disadvantage seems to be migration. Their role in endourological practice remains to be validated.

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“…The placement of an endoluminal permanent metal stent is not new. The fi rst application of a self-expanding permanent endoluminal wall stent in the ureter was reported by Gort et al [7] for a ureteroileal stricture. Since then these stents have been successfully used by others for the treatment of extrinsic malignant or benign ureteric strictures [8][9][10] .…”

Section: Discussionmentioning

confidence: 99%

Endoscopic Treatment of Ureteric Strictures: Acucise, Cold-Knife Endoureterotomy and Wall Stents as a Salvage Approach

et al. 2005

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Objective: To evaluate the factors influencing the results of endoureterotomy using cold-knife and cutting balloon dilatation, and permanent ureteral wall stents in patients with benign ureteral strictures after different operations affecting the ureter. Materials and Methods: Over a 4-year period, in 18 patients, endoscopic cold-knife and Acucise endoureterotomies were performed in 13 and 7 renal units, respectively. Eight Memoterm permanent ureteral wall stents were inserted into 7 patients when endoureterotomy failed. Successful outcome was defined by the absence of re-stricture assessed both clinically and radiologically. Results: The strictures were secondary to ureterolithotomy in 6, ureteroscopy in 3, gynecological procedures in 4, abdominal surgeries in 2, transplantation in 2 and continent urinary diversion in 1. The right and left ureters were unilaterally affected in 5 and 11 patients, respectively (5 of them had a solitary kidney), while the remaining 2 patients had bilateral ureteral strictures. We achieved total ureteral patency of 3 (43%) and 7 (54%) renal units with Acucise and cold-knife incision, respectively. Obstructive uropathy was resolved in 6 renal units (75%) of 8 using ureteral wall stents. Conclusion: Endoureterotomy with cold-knife or Acucise cutting balloon dilatation is effective in the treatment of iatrogenic ureteral strictures, but only in a selected group. Based on our results, the favorable prognostic criteria for endoureterotomy are the length (≤1.5 cm), the nonischemic nature of the stricture and adequate renal function. As a salvage approach, permanent self-expanding ureteral wall stents with a 75% success rate may provide a satisfactory outcome for decompression of an obstructed system.

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Metallic self-expandible stenting of a ureteroileal stricture.

Cited by 49 publications

References 0 publications

Percutaneous balloon dilatation for transplant ureteral strictures

Percutaneous balloon dilatation for transplant ureteral strictures

Use of Memokath 051 Metallic Stent in the Management of Ureteral Strictures: A Single-Center Experience

Endoscopic Treatment of Ureteric Strictures: Acucise, Cold-Knife Endoureterotomy and Wall Stents as a Salvage Approach

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