A case of trisomy 22 liveborn female baby with multiple congenital anomalies is described.

摘要作者报告一例具有多种先天性异常的三染色体22症的婴。

So this fetus presented seeral signs of trisomy 21, including the hypoplasia of the nasal bone, hypodontia, micrognathia, and hypospadias.

这样，本例胎儿显示21三体的若干征象：包括鼻骨发育不全、牙发育不全、小颌和尿道下裂。

Polysomy, which includes trisomy, is the condition in which one or more chromosomes are represented more than twice in the cell.

多染色体包括三染色体都是一条或多条染色体代替了正常细胞中的两条染色体形成的。