PRIMARY VESICOURETERAL REFLUX IN IRANIAN CHILDREN:A FOLLOW-UP OF 330 CASES

Experience with vesicoureteral reflux (VUR) differs in differ-ent centers and there are plenty of controversies. The aim of this study was to evaluate the outcome of primary VUR complications and the rate of recurrence of UTI. The medical charts of all infants and children with primary VUR who were followed up by two nephrologists were reviewed. During 19 years (1985-2004), 330 patients (271 females, 59 males) with 496 refluxing ureters were followed up as primary VUR. The patients age at diagnosis was 4 days to 16 years (mean: 4.1 years) and the mean duration of follow-up was 4.5 years. Urinary tract infec-tion (UTI) was the presenting symptom in 95% and fever was recorded in 35% of cases. Frequencies of different grades of VUR at initial investigation were 10%, 35%, 30%, 13% and 12% for grades I to V, respectively. Recurrence of UTI in VUR of grades I to V were 22.2%, 18.1%, 20%, 23.4% and 17.9%, re-spectively. Follow-up voiding cystourethrogram revealed resolution of VUR in 55%, improvement in 27.5%, no change in 12%, and deterioration in 5.5%. Complications such as chronic renal failure and hypertension were observed in 13 and 13 patients, respectively. Renal scarring was present in 52% of boys and 29% of girls. The present study indicates that symptomatic primary VUR is more common and has better prognosis in girls. Recurrence of UTI is not re-lated to the grade of VUR.