Objective: To report a rare fetal congenital lung anomaly characterized by over inflation of a pulmonary lobe.
Case Report: A 28-year-old systemic lupus erythematous mother, gravida 1 para 0, who had normal prenatal care in our department, was admitted for labor pain and an abnormal fetal heart location was noted incidentally during labor. The baby showed rib retraction in room air but no obvious cyanotic change after delivery.