AN UNUSUAL PRESENTATION OF TOTAL ANOMALOUS PULMONARY VENOUS RETURN IN DICHORIONIC DIAMNIOTIC TWINS
DOES IT HAVE A GENETIC BACKGROUND?
Abstract
Congenital heart defects (CHDs) represent the most common human birth defect, having a birth prevalence of 7-9 per 1000 singleton births . CHDs are more common in twin pregnancies with a prevalence of approximately 20 in 1000 live births.Monochorionic (MC) twins are at even higher risk compared to Dichorionic (DC) twins.Herein, we report a scenario where Dichorionic Diamniotic (DCDA) twins who presented with the same type of CHD (TAPVR: Total anomalous pulmonary venous return) in our Neonatal intensive care unit(NICU).Several familial cases of TAPVR have been reported, but no notable pedigree has been reported.Multiple case reports have shown a genetic background of TAPVR.Screening of all siblings with TAPVR is a burden to the patients due to psychological stress or financial problems on the parents. However, these consequences are outweighed by the benefit of diagnosing this critical disease early so that the patient can be taken for surgery before severe congestive heart failure develops. Therefore, if a genetic background is detected in a case of TAPVR, routine fetal echocardiography or cardiography immediately after birth is reasonable to screen TAPVR.
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