Fetal goiter mimicking anomalous pulmonary venous connection.

Fetal thyroid dysfunction is a well-recognized cause of secondary cardiac disease, including arrhythmias and hydrops fetalis, but has not previously been reported to mimic structural heart disease. We describe a case of fetal goiter presenting as suspected anomalous pulmonary venous connection and highlight lessons for the obstetrician and pediatric cardiologist with regard to imaging as well as communication.