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Published on: September 5, 2011
Monochorionic Twin Discordance for Horseshoe Lung and Tricuspid Atresia
Marina Sousa Gomes1, José Monterroso2, Otília Brandão3
1Department of Obstetrics and Gynecology, Unidade Local de Saúde do Alto Minho EPE, Viana do Castelo, Portugal.
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.
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