title: A 7-year-old girl with periodic flank discomfort.
authors: Katherine
authors: K
authors: Maddox
authors: Catherine
authors: C
authors: Buck
authors: Luis
authors: L
authors: Seguias
mesh_terms: D002648:Child; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery; D021782:Multicystic Dysplastic Kidney / Q000175:diagnosis* / Q000601:surgery; D014517:Ureteral Obstruction / Q000175:diagnosis* / Q000601:surgery