Fetomaternal Hemorrhage and Choriocarcinoma: A Case Report.

Background: This case describes chronic anemia of a late preterm infant secondary to maternal-fetal hemorrhage and subsequent findings of maternal choriocarcinoma.

Clinical findings: This infant was born at 35 6/7 weeks gestational age via cesarean section for non-reassuring fetal heart tones. The mother presented with decreased fetal movement and the biophysical profile was 4/8. Following delivery, the infant did not require respiratory support, was vigorous with extreme pallor, and had a hemoglobin of less than 5 on cord gas.

Primary diagnosis: Chronic anemia secondary to fetomaternal hemorrhage.

Interventions: The infant's initial hemoglobin was 2.4 and hematocrit was 8.1. The mother's Kleihauer-Betke test was elevated at 7%. The infant required a partial exchange transfusion following admission to the neonatal intensive care unit. Following the partial exchange transfusion, the infant began to experience increasing respiratory distress and required respiratory support. An echocardiogram showed severe persistent pulmonary hypertension of the neonate. The mother was subsequently diagnosed with choriocarcinoma.

Outcomes: The infant fully recovered from chronic anemia and persistent pulmonary hypertension of the neonate and was discharged home with the mother. The infant required follow-up testing for choriocarcinoma outpatient.

Practice recommendations: Newborns diagnosed with early chronic anemia should be evaluated, the cause investigated, and appropriate treatment considered. If the cause of blood loss is unknown, a maternal Kleihauer-Betke test should be considered. In this case, a partial exchange transfusion was performed to avoid cardiovascular volume overload, but another course of treatment could include small aliquots of packed red blood cell transfusions.