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21三体的若干征象：包括鼻骨发育不全、牙发育不全、小颌尿下裂。

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下裂术后尿，是简便易行，安全性高，创伤小，疗效肯定的治疗方法。