Abstract
Success rates of ureteral reimplantation for primary vesicoureteral reflux are high. Few studies document the natural history of children with persistent vesicoureteral reflux. We reviewed their clinical outcomes and long-term resolution. We performed a retrospective review of all children with persistent vesicoureteral reflux (grade 1 or greater) into the reimplanted ureter(s) on initial cystogram after reimplantation for primary vesicoureteral reflux at our institution from January 1990 to December 2002. We evaluated subsequent cystograms (graded on the 3-point radionuclide cystogram scale), surgery and urinary tract infection. We performed survival analyses of time to resolution of persistent (grade 1 or greater) and clinically significant (grade 2 or greater) vesicoureteral reflux in patients with more than 1 postoperative cystogram. Of 965 patients 59 (94 ureters) had persistent vesicoureteral reflux (6.1%), including 19 grade 1/3, 29 grade 2/3 and 11 grade 3/3. Median patient age at reimplantation was 1.9 years (range 0.8 to 5.1) and 62.7% were female. Preoperative vesicoureteral reflux grade was 2/3 in 42.4% and 3/3 in 57.6%, and 30.5% of patients had ureteral tapering. Median followup was 47.1 months (IQR 19.3-650.3). Reflux was resolved in 26 of 36 (72.2%) patients and median time to resolution was 20.4 months. Grade 2 or greater reflux on postoperative cystogram resolved in 21 of 32 (65.6%) patients and median time to resolution was 20.4 months. There were 10 patients with persistent vesicoureteral reflux at last cystogram, grade 1 or 2 in 9 and 3/3 in 1 patient. One patient underwent repeat reimplantation for persistent vesicoureteral reflux and 7 (13%) had postoperative febrile urinary tract infection at a median of 37 months postoperatively (IQR 1.7-64.4). Persistent vesicoureteral reflux after reimplantation resolves spontaneously in most children and can be managed nonoperatively with good long-term outcomes.
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