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case_images: Images of twin A and twin B at 12 weeks.
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case_images: At 12 weeks of gestation, ultrasound examination showed one twin with cystic neck mass (twin A), which was considered as lymphocystic tumor (Figure 1).
case_images: (A) Images of umbilical arteries in twin B at 14+2 weeks. (B) Images of umbilical arteries in twin B at 35+6 weeks.
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case_images: A) and indicated one umbilical vein and two umbilical arteries in another twins' umbilical cord (twin B) (Figure 2A). After extensively counseled by the multidisciplinary team, the couple opted for selective termination of the lymphocystic tumor fetus (twin A). Ultrasound imaging of the umbilical cord in twin B revealed single umbilical artery at 35 weeks and 6 days of gestation (Figure 2B).
case_images: Images of the dichorionic diamniotic placenta and the umbilical cord of twin B.
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case_images: Thrombosis was observed throughout one of the umbilical artery (Figure 3).
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