Ultrasound diagnosis of placental teratoma: a case report / 中华围产医学杂志

ABSTRACT

This study reported a case about a 30-year-old pregnant woman with placental teratoma. The presumptive diagnosis of placental teratoma was made based on the abnormal echo detected on the placental surface by ultrasound at 33 + gestational weeks. MRI examination also suggested the possibility. She had an otherwise uneventful pregnancy and puerperium and gave birth to a healthy newborn vaginally at 40 +4 gestational weeks. A smooth oval-shaped nodule covered by skin was visualized at the edge of the placenta, and pathological results suggested a mature cystic teratoma. The causes of placental teratoma remain unclear, and no obvious clinical symptoms are identified. Typically, it has no adverse effects on the mother and baby. A combination of ultrasound and MRI is critical to determine the nature of the tumor prenatally, but the gold standard for diagnosis relies on placental pathology.