Upper tract management when posterior urethral valve ablation is insufficient

Area of Science:

• Pediatric Urology
• Nephrology

Background:

• Posterior urethral valves (PUV) are a common congenital anomaly in male infants.
• Management of PUV often involves primary valve ablation, but complications can arise.

Purpose of the Study:

• To evaluate the outcomes of managing massively dilated ureters in boys with posterior urethral valves.
• To compare primary reconstruction versus staged reconstruction for severe ureteral dilation.

Main Methods:

• Retrospective review of 105 boys with PUV over 10 years.
• Analysis of management strategies for 71 massively dilated ureters.
• Comparison of primary ureteral tailoring and staged reconstruction via cutaneous ureterostomy.

Main Results:

• Most boys underwent primary valve ablation.
• 39 boys required additional procedures for 71 dilated ureters due to azotemia, infection, or deterioration.
• Primary ureteral tailoring succeeded in 17 boys (25 ureters).
• Staged reconstruction via ureterostomy was initiated for severe cases, with some mortality from azotemia, but survivors retained acceptable renal function.

Conclusions:

• While primary valve ablation is common, significant ureteral dilation necessitates further intervention.
• Staged reconstruction, despite its complexity, offers a viable option for preserving renal function in severe PUV cases.