Extraanatomic stents for transplant ureteric stenosis

Area of Science:

• Urology
• Transplant Surgery
• Interventional Radiology

Background:

• Standard endourology and surgical options for severe ureteric stenosis in renal transplant recipients are often limited, especially with difficult access to the transplant renal pelvis.
• Ureteric stenosis is a significant complication following renal transplantation, potentially leading to graft dysfunction.

Observation:

• This study describes a novel technique using a silicone-polytetrafluoroethelene (PTFE)-bonded extraanatomic urinary tract stent for urinary drainage in two transplant patients with severe ureteric stenosis.
• Limited access to the transplant renal pelvis posed a challenge for conventional treatment methods.

Findings:

• The extraanatomic stent provided effective urinary tract drainage in both cases, representing a viable alternative approach.
• The procedure was found to be safe when executed by experienced interventional radiologists and urologists skilled in percutaneous renal access.

Implications:

• This technique offers a potential solution for complex ureteric reconstruction in renal transplantation when conventional methods have proven unsuccessful.
• It expands the armamentarium for managing ureteric complications in transplant patients, potentially improving graft survival rates.