Balloon dilatation of a ureteropelvic junction obstruction.

Abstract
The nonoperative dilatation of a ureteropelvic junction obstruction using a double-lumen balloon dilatation catheter is described. A ureteropelvic junction obstruction was dilated successfully in a 20 yr old woman who had undergone an unsuccessful dismembered pyeloplasty. A review of the literature did not reveal a previous description of this approach.

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