I I Male QH Female

Prenatally detected

Detected after UTI

Prenatal detection of vesicoureteral reflux (VUR): gender distribution versus VUR detected after urinary tract infection (UTI). VUR detected as part of the evaluation of prenatal hydronephrosis is most commonly identified in boys. In an analysis of six published studies of VUR diagnosed in a total of 124 infants with antenatally detected hydronephrosis, 83% of those affected were boys [33]. Conversely, VUR detected after a UTI most commonly affects girls. In the International Reflux Study in Children (IRSC) and Southwest Pediatric Nephrology Study Group (SWPNSG) investigations of VUR detected in a total of 380 children after UTI, 77% of those affected were girls [20,36].

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