Congenital prepubic sinus—An aborted dorsal urethral duplication or a cloacal remnant?

Case series examining congenital prepubic sinus (CPS), a rare urogenital anomaly presenting as a blind tract from pubic skin to bladder or urethra. Four pediatric cases are analyzed to explore varied clinical presentations and debate the embryological origin—whether CPS represents an aborted dorsal urethral duplication or a cloacal remnant.