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、
发育不全、小
和尿道
裂。
发育不全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、发育不全、小和尿道裂。
Objective:To investigate the relationship among the congenital hypodontia of mandibular incisor and malocclusion and the variation of medial distal dimension of mandibular canine.
探
天缺失情况,与畸形的关系以及尖近远中径的变化。
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