Monochorionic Twin Discordance for Horseshoe Lung and Tricuspid Atresia

Abstract

Background: The horseshoe lung is a congenital malformation in which the bases of the right and the left lung are fused. Case report: We describe a monochorionic twin gestation with malformation discordance. The abnormal twin had a horseshoe lung with hypoplasia of the right lung, tricuspid atresia, cleft lip, and a pelvic right kidney. Conclusion: The discordance of anomalies in this monochorionic twin suggests that a postzygotic mutation, epigenetic change, or environmental factors may be responsible for these malformations.

Keywords:

• Cleft palate
• horseshoe lung
• monozygotic twins
• pelvic kidney
• tricuspid atresia

Acknowledgments

We do not have a source of support in the form of grants, equipment, or drugs.

Disclosure statement

The authors have no conflicting interests do declare.

Additional information

Funding

The authors received no financial support for the research, authorship, and/or publication of this article.