A scan determines the position of the baby in the womb.

扫描以确定胎儿在子宮中位置。

C. Multiparity. Macrosomic infants are 2-3 times more likely to be born to parous women.

次经妇生育巨大胎儿性是初妇2-3倍。

No one knows why a fetus is not automatically rejected by the mother’s immune system.

没有人知道为什么母亲免疫系统不会自动排斥胎儿。

The virus can infect the early fetus, induce immunotolerance and a lifelong persistent viremia.

这种病毒以感染胎儿，引起免疫耐受终生持续病毒血症。

The skull is opened in this third trimester stillborn fetus to reveal hydranencephaly.

处打开颅骨来自一个7-9月死胎儿，以显示积水性无脑畸形。

Using a scanner, we can look at the unborn foetus.

我们用扫描器以观察未出生胎儿。

The affected fetuses and neonates typically have severe facial defects, such as cyclopia, as well.

受影响胎儿新生儿存在典型较重面部缺陷，例如独眼畸胎。

Purpose To observed the clinicopathologic features of acardia,and to investigate the pathogenesis of acardia.

目观察无心畸形胎儿临床病理形态,并对其发生进行分析。

A routine scan revealed abnormalities in the fetus.

一次常规扫描发现胎儿畸形。

E,cordis structure of the anencephalus is observed under light microscope.

染色,通过光镜观察无脑儿及正常胎儿心脏结构。

Abortion is defined as termination of pregnancy resulting in expulsion of an immature, nonviable fetus.

妊娠终止导致未成熟、无法成活胎儿被排出体外称为。

Blood typing also helps identify disorders such as erythroblastosis fetalis.

外,血型分类还以帮助诊断某些疾病,如胎儿母红血球增多症。

MeHg can easily pass through the placental barrier, accumulate in the fetus and change the behavior and perceptibility of the second generation related to the function of central nervous system.

它极易通过胎盘屏障进入胎儿体内,影响子代生长发育,改变子代与中枢神经系统功有关行为认知力。

Images 1, 2: 21st week of pregnancy. Transverse scans through the fetal thorax show tumoral mass at the level of the heart which turned out to be lipoblastoma.

图1.2：孕21周时，经胎儿胸腔横断面扫查发现心脏水平肿块，被证实为脂肪肉瘤。

This disease is an unusualsevere type of hemolytic disease of newborn (erythroblastosis fetalis)characterized by pathognomonic edema of whole body and the placenta.All the cases were dead fetuses.

胎儿水肿属新生儿溶血病一种,最显著病变为全身水肿及胎盘水肿。

During fetal development, abnormal openings may occur in the pericecal, small bowel, transverse colon, or sigmoid mesentery, as well as the omentum, leading to mesenteric hernias.

在胎儿发育阶段，这种异常裂隙发生在盲肠旁、小肠、横结肠或乙状结肠网膜，造成肠系膜疝。

Obesity can lead to maternal fetal birth enormous, and would result in gestational diabetes, gestosis, cesarean section, postpartum hemorrhage increased number of complications and so on.

孕妇肥胖导致分娩巨大胎儿，并造成妊娠糖尿病、妊娠中毒症、剖宫、后出血情况增多等等并发症增多。

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21三体若干征象：包括鼻骨发育不全、牙发育不全、小颌尿道下裂。

Objective: To detect the relationship between birth weight discordancy and the pregnant results such as preeclampsia and prenatal mortality.

目探讨双胎妊娠胎儿体重不协调与孕妇并发症及新生儿结局关系。

Conclusion: Prenatal diagnosis of fetal gastrointestinal tract anomalies is of instructional clinical value in eugenetics and postnatal treatments.

超声前诊断胎儿消化道畸形,对优生、优育及出生后早期及时治疗具有重要临床指导价值。