When Is Surgery Needed for Vesicoureteral Reflux?

Reflux itself does not cause pain or symptoms; the real problem is the increased risk of kidney infection (pyelonephritis) from urine being carried back up from the bladder to the kidney, and the permanent mark it can leave (reflux nephropathy, renal scarring). The goal of treatment is not to eliminate reflux but to protect the kidney.

Guidelines (EAU/ESPU, AUA) describe the situations in which surgical correction comes up in similar terms. None of these alone means 'surgery is mandatory'; but when one or more occur together, corrective treatment takes priority over the watch-and-wait approach.

• A febrile urinary tract infection while on antibiotic prophylaxis (breakthrough infection), especially if it recurs
• A new or progressing renal scar on DMSA, or a drop in split (differential) kidney function
• High-grade (IV–V) reflux not resolving over the years, especially after toilet training is complete
• An accompanying anatomical anomaly: paraureteral diverticulum, ureterocele (a balloon-like swelling where the ureter opens into the bladder), duplex collecting system (duplication), or a markedly dilated ureter
• The informed preference of a family who does not want long-term antibiotic use, or who is looking for a permanent solution

• The most common item on this list is having a febrile urinary tract infection while on antibiotic prophylaxis (CAP). This shows both that prophylaxis is not enough and is a reminder that every febrile episode carries a risk of leaving a new scar on the kidney. A new or progressing scar, in turn, is direct evidence that the kidney has been harmed, and shows that waiting has a cost.

Just as much as the decision to operate, the decision 'not to operate' is a medical decision too. In a child with grade I–II reflux who has not had a febrile infection and whose kidneys are healthy, surgery would gain nothing; the great majority of these reflux cases resolve on their own.

'VUR surgery' actually covers two different procedures. Endoscopic injection (subureteral bulking agent; Deflux) is an incision-free, same-day procedure; first-session resolution is roughly 80–90% for grade I–II and lower for grade IV–V. Ureteral reimplantation (reconnecting the ureter to the bladder) is a true operation, performed by an open or minimally invasive method; success is reported in the literature at roughly 95–98%.

The decision to operate is made by openly discussing the child's risk profile (grade, age, infections, scarring, BBD, sex) with the family. What waiting would mean, what surgery would and would not resolve, possible complications, and the follow-up plan are all part of this conversation.

• A repeat voiding cystourethrogram (VCUG) after surgery is not needed for most children; if the ultrasound is normal and there is no infection, follow-up continues with ultrasound, blood pressure checks, and urinalysis. After surgery, yearly check-ups continue as well, especially for children with scarring, all the way through adolescence and into adulthood.