OverviewAn abnormal opening in the diaphragm that allows part of the abdominal organs to migrate into the chest cavity, occurring before birth.
Review Date 5/14/2017
Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.