Transperitoneal ureterolithotomy for stones in the lower third of the ureter.

A modified technique of transperitoneal ureterolithotomy for stones in the lower third of the ureter was performed on 14 patients over a 3-year period. The surgical procedure consisted of a ureterotomy behind a specially raised flap of peritoneum; its advantages are discussed. This variation makes for a safe and effective operation and should be considered as an alternative to the more traditional retroperitoneal approach for stones occupying the lower third of the ureter.