title: Apparent ureteropelvic junction obstruction caused by vesicoureteral reflux.
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D007223:Infant; D008297:Male; D014517:Ureteral Obstruction / Q000209:etiology*; D014567:Urography; D014718:Vesico-Ureteral Reflux / Q000150:complications*