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Advances in Urology
Volume 2009, Article ID 186483, 3 pages
http://dx.doi.org/10.1155/2009/186483
Case Report

Dichorionic Diamniotic Twin Pregnancy Discordant for Bladder Exstrophy

1Department of Urology, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
2Department of Obstetrics and Gynecology, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA

Received 25 June 2009; Accepted 5 August 2009

Academic Editor: Hiep T. Nguyen

Copyright © 2009 William Tu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A 38 year-old woman presented with a dichorionic diamniotic twin pregnancy at gestational age of 32 weeks concerning for an abdominal wall mass in one of the twins. Initial ultrasound evaluation was suspicious for an omphalocele, but the affected twin was found to have bladder exstrophy at birth. This illustrates the difficulties of accurate prenatal diagnosis of bladder exstrophy in a twin pregnancy at a late gestation.