[Endoprosthesis of the ureter]

Area of Science:

• Urology
• Biomaterials Science

Context:

• Recurrent and long ureteral strictures pose significant challenges in urological practice.
• Management often involves complex interventions, especially after failed previous treatments or in cases of kidney transplants.

Purpose:

• To evaluate the efficacy of titanium nickelide monothread metal stents in treating complex ureteral strictures.
• To assess the safety and long-term outcomes of metal stent placement in patients with recurrent and long ureteral strictures.

Summary:

• A study involving male patients aged 37-63 with recurrent and long ureteral strictures utilized titanium nickelide monothread metal stents.
• The stent was employed in three patients with recurrent/long ureteral strictures and in two patients with allotransplanted kidneys experiencing long pyeloureteral strictures post-surgery.
• No severe complications or fatalities were noted; operations were effective, with follow-up showing normalized urodynamics and kidney function.

Impact:

• Metal stents can reestablish upper urinary tract patency in challenging cases of recurrent and long ureteral strictures.
• The use of these metal stents demonstrates potential for improving patient quality of life by restoring normal urinary flow and kidney function.