The clinical significance of renal caliceal diverticulum in children: relation to vesicoureteral reflux.

Of 250 children with vesicoureteral reflux, 23 had a renal caliceal diverticulum in one or both kidneys. In a third of these 23 children this was the only renal change noted and in the remaining two-thirds other changes of chronic pyelonephritis were seen. The presence of a caliceal diverticulum is evidence that renal damage of some degree is associated with reflux and urinary tract infection, and should be added to existing criteria for investigation of reflux in a child.