胎儿半椎体的产前超声诊断

Prenatal sonographic diagnosis of hemivertebra

目的 探讨产前超声对胎儿半椎体的诊断价值.方法 回顾分析我院诊断的3例胎儿半椎体病例的产前二维及三维超声表现,并与产后超声检查、其他影像学检查及病理结果进行对照.结果 3例胎儿超声检查均可见脊柱形态改变,受累节段仅有一半的椎体.其中1例经出生后影像学证实,1例经尸检病理证实,1例尚在随访中.结论 胎儿半椎体具有特征性超声表现,不合并其他畸形时多数预后良好,仔细的中孕期超声检查有助于早期发现病变并给予适当的遗传咨询.

Objective To investigate the diagnostic value of prenatal ultrasonography in the fetal hemivertebra. Methods The ultrasonographic findings of three fetuses with hemivertebra diagnosed in our hospital were reviewed and compared with those of postnatal ultrasonography,other image modalities,and autopsy. Results In all fetuses,a distortion of the spine was observed where only one half of the vertebra could be identified. The parents opted for termination of the pregnancy in one case and the deformity was confirmed by autopsy. The other two fetuses were delivered and in one fetus the diagnosis was confirmed by radiological assessment. Conclusions Hemivertebra can be diagnosed accurately by second-trimester ultrasonography. The prognosis is mostly favorable when no other anomalies are associated. Meticulous examination may disclose the lesion and help decide the fate of pregnancy.