title: Editorial comment.
authors.forename: George W
authors.initials: GW
authors.lastname: Kaplan
mesh_terms: D002828:Choristoma / Q000150:complications*; D005260:Female; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000601:surgery*; D008297:Male; D014517:Ureteral Obstruction / Q000601:surgery*; D013520:Urologic Surgical Procedures / Q000379:methods*