title: Editorial comment.
authors.affiliation: Department of Urology, University of California- Irvine, Irvine, California, USA.
authors.forename: Irene M
authors.initials: IM
authors.lastname: McAleer
mesh_terms: D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D014517:Ureteral Obstruction / Q000175:diagnosis*