〈Cases Reports〉The case of a newborn manifesting heart failure caused by a chorioangioma

[Abstract] We reported the case of a newborn manifesting heart failure caused by a chorioangioma. A male infant was admitted to Kinki UniversityHospital Neonatal Intensive Care Unit (NICU) 4 hours after birth because of cyanosis. He had respiratory distress, and ultrasound echocardiographyshowed serious mitral regurgitation. An improvement of the mitral regurgitation 27 hours after birth resulted from olprinone hydrochloride administration, and mechanical ventilation was discontinued 2 days later. Pathologic examination of the placenta revealed a chorioangioma ; a 290g giant angioma adhering to a 250 g placenta, it therefore seemed likely that the cause of the respiratory distress was hemorrhagic pulmonary edema associated with theheart failure resulting from the blood-flow short circuit in the chorioangioma. Thus, in order to diagnose the cause of heart failure in a newborninfant, doctors should be aware of chorioangioma, and pathologic examination of the placenta could be important when an unusual course is observed in newborns