Posterior urethral valves in fraternal twins: case report and review of the literature

We report a pair of dizygotic twins with type 1 posterior urethral valves. Concomitant and discordant presentation of posterior urethral valves in twins is rare, with a handful of cases in the literature. The occurrence of identical pathology in dizygotic twins probably suggests the possibility of an inherited trait as it does exist in monozygotic twins. (C) 2018 Annals of Pediatric Surgery.