Placental chorioangioma: an unusual cause of neonatal cardiomyopathy.

A late preterm baby presented with clinical and echocardiographic features of cardiomyopathy and cardiac failure soon after birth. After extensive metabolic, infective and genetic investigations, the likely cause was established to be due to multiple small placental chorioangiomas. While large placental chorioangiomas are associated with maternal, fetal and neonatal complications, small chorioangiomas are usually asymptomatic and diagnosed incidentally on placental histology. Our case demonstrates that multiple small chorioangiomas might behave like a giant chorioangioma, causing significant neonatal morbidity. This report also highlights the importance of assessing the placental histology where no identifiable cause for neonatal cardiomyopathy can be found.