title: Dilatation of ureteral orifice for ureterorenoscopy.
abstract: The history of endoscopic ureteral dilatation began before the turn of the century, and many of those older methods are still in use with the aid of updated instruments. The recent development of controlled hydraulic dilatation promises to make ureteroscopy a one-step procedure.
mesh_terms: D002408:Catheters, Indwelling; D004106:Dilatation / Q000295:instrumentation / Q000379:methods; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods*; D004867:Equipment Design; D006801:Humans; D014513:Ureter / Q000473:pathology*; D014515:Ureteral Diseases / Q000628:therapy; D014546:Urinary Catheterization