An abnormal opening in the diaphragm that allows part of the abdominal organs to migrate into the chest cavity, occurring before birth.
Review Date 4/4/2019
Updated by: Liora C. Adler, MD, Pediatric Emergency Medicine, Joe DiMaggio Children's Hospital, Hollywood, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.