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Vesicoureteral reflux is now recognized to be hereditary and familial. The incidence of reflux in siblings has proved to be significant but less is known about the incidence of reflux in the offspring of known reflux patients. In an ongoing prospective series of reflux screening we identified 23 patients of childbearing age with a known history of reflux and screened their 36 offspring with an awake voiding cystourethrogram. Of these 36 offspring 24 (66%) exhibited vesicoureteral reflux. The literature was also reviewed to determine the incidence of parent/child reflux from reported cases. This review revealed a 65% rate of reflux in the offspring of known patients. Our preliminary results coupled with those in the literature signify a need to screen the offspring of known reflux patients and suggest a rethinking of the genetic transmission for this trait. While vesicoureteral reflux could still be a multifactorial genetic trait with a …