Introduction: The risk of developing renal scars is higher in the first years of life, mostly when the patient has vesicoureteral reflux, for that reason is necessary to identify this reflux as early as possible. Our aim was to determine the prevalence and characteristic of presentation of vesicoureteral reflux in infants who suffered neonatal urinary tract infection.
Method: Observational, prospective study, from 1992 to 2007, of a newborn cohort that suffered the first urinary tract infection acquired in the community with upper localization for clinical criteria, who had been carried out renal ultrasound and mictional urethrocystography.