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

这，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、小颌尿道下裂。

Conclusion: Ni-Ti shape memory alloy stent is convenient and feasible in treating postoperative urethral stricture of hypospadia, and it has higher safety, small wound and definite curative effect.

镍钛记忆金属支架管治疗尿道下裂术后尿道狭窄，是简便，全性高，创伤小，疗效肯定的治疗方法。