Laparoscopic pyeloplasty: role of preoperative retrograde pyelography.

Laparoscopic dismembered pyeloplasty is a minimally invasive, safe and effective therapy for pelvi-ureteric junction obstruction with low morbidity, shorter convalescence and excellent outcomes. To maximize an efficacious outcome, minimally invasive treatment of this condition requires preoperative planning with adequate imaging, but the role of retrograde pyelography remains controversial. We present a report in which retrograde pyelography accurately contributed to the perioperative diagnosis of ureteral fibroepithelial polyps, subsequently altering surgical management.