Mediastinal teratoma.
D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000150:complications; D005260:Female; D006801:Humans; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography; D013724:Teratoma / Q000000981:diagnostic imaging / Q000473:pathology*