Lazy bladder syndrome (the infrequent voider) causing a vesicoureteral reflux in the child.

The Infrequent Voider Syndrome or Lazy Bladder Syndrome in children is characterized by a large capacity bladder, frequently associated with a significant volume of residual urine. Usually these patients arrive at medical examination with a history of recurrent urinary infections but without anomalies in the upper urinary tract. We report about a young girl affected by one-sided 20 degree vesico-ureteral reflux due to Lazy Bladder Syndrome that had never been diagnosed before.