title: Editorial comment.
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Freedman
mesh_terms: D004108:Dilatation, Pathologic; D006801:Humans; D007231:Infant, Newborn; D007668:Kidney / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D007682:Kidney Pelvis / Q000000981:diagnostic imaging* / Q000473:pathology*; D011379:Prognosis; D011877:Radionuclide Imaging; D016216:Ultrasonography, Prenatal