“双胞胎输血综合症”有时候会引起双胞胎之间的大小差异。

Size differences between twins can sometimes be caused by a condition called Twin to Twin transfusion syndrome.

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双胞胎输血综合症以及其他单绒毛膜双胞胎怀孕的并发症，比方胎盘分配不均等，普通都是经过超声诊断的。

Twin to twin Transfusion Syndrome (TTTS) and other complications of monochorionic (Shared placenta) twin pregnancies like unequal placental sharing are generally diagnosed by ultrasound.

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