Duplex reflux: a study of 105 children.

Area of Science:

• Pediatric Urology
• Nephrology
• Medical Research

Background:

• Vesicoureteral reflux (VUR) is a condition where urine flows backward from the bladder to the kidneys.
• Completely duplicated collecting systems are a congenital anomaly that can be associated with VUR.
• Understanding VUR resolution in these complex anatomies is crucial for effective management.

Purpose of the Study:

• To retrospectively analyze the outcomes of children with VUR in completely duplicated collecting systems.
• To compare spontaneous reflux resolution rates in duplicated systems with those in single systems.
• To evaluate the effectiveness of surgical versus nonoperative management strategies.

Main Methods:

• Retrospective study of 105 children diagnosed with VUR and completely duplicated collecting systems.
• Analysis of treatment approaches: surgical (ablative or reimplantation) versus nonoperative management.
• Long-term follow-up (up to 11 years) to assess spontaneous resolution rates based on reflux grade and moiety involvement.

Main Results:

• 64% of children underwent surgical intervention, while 36% were managed nonoperatively.
• Spontaneous resolution rates were 85% for grades I and II VUR and 36% for grade III VUR.
• Reflux primarily involved the lower pole moiety (89%) or both moieties (11%).

Conclusions:

• Spontaneous resolution of mild to moderate VUR in duplicated collecting systems mirrors rates seen in single systems.
• Nonoperative management appears viable for selected cases, particularly with lower-grade reflux.
• Further research may refine treatment guidelines for VUR in complex pediatric urinary tract anomalies.