ArticleCureus2025
Endoscopic Deflux Injection for Vesicoureteral Reflux in a Renal Allograft Complicated by Recurrent Acute Pyelonephritis: A Case Report.
Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Vesicoureteral reflux (VUR) in a renal allograft ureter is a well-recognized and clinically significant complication that may lead to recurrent febrile urinary tract infection (fUTI) and progressive allograft dysfunction. While open ureteral reimplantation remains a standard surgical option, it is relatively invasive for kidney transplant recipients. Endoscopic subureteral injection of a bulking agent such as Deflux has been widely used for primary VUR in children, but reports in renal transplant recipients are limited. We report a case of a living donor kidney transplant recipient who developed recurrent episodes of acute pyelonephritis in the transplanted kidney. Imaging studies revealed clinically significant VUR at the ureteroneocystostomy site of the renal allograft. Despite prophylactic antibiotics, febrile urinary tract infections persisted, raising concern for long-term graft injury. The patient underwent endoscopic anti-reflux surgery using subureteral Deflux injection under cystoscopic guidance. The procedure was completed without intraoperative or perioperative complications. Follow-up voiding cystography demonstrated resolution of VUR, and no further episodes of acute pyelonephritis occurred during 52 months of clinical follow-up, with stable allograft function. This case suggests that endoscopic Deflux injection can be a safe and effective minimally invasive option for managing transplant kidney VUR complicated by recurrent acute pyelonephritis, potentially preserving renal allograft function while avoiding more invasive reconstructive surgery.
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