Background: Ureteral duplication is a rare congenital anomaly usually found in childhood. It manifests in various anatomic forms.
Aim: To report a case of a ureteral duplication in adult man and a review of the literature in attempt to categorize this rare entity.
Case: This report describes a case of a Y-type ureteral duplication presenting in a 30-y-old man with symptoms of bladder outlet obstruction.
Conclusion: Ureteral duplication is quite rare but a very distinct entity. It occurs exclusively in children and male adolescents. Its occurrence in adulthood imposes serious diagnostic and therapeutic difficulties.