A 28-year-old woman, G1, P0, has an uncomplicated pregnancy until 28 weeks’ gestation, when she develops uterine contractions and has premature rupture of membranes. An ultrasound reveals a lesion with the representative gross appearance shown in the figure. Which of the following is the most likely diagnosis of this lesion?
- Teratoma
- Neuroblastoma
- Hemangioma
- Lymphangioma
- Hamartoma