Analysis of characteristic features in ultrasound diagnosis of fetal limb body wall complex during 11-13+6 weeks

Table 1 General information of pregnant women

No.	Age	Gestational age in wk	Pregnancy history, G/P/A/L	Embryo transplantation	Down syndrome screening status
1	29	13	G1P0	No	Unchecked
2	28	13+6	G2P0A1	Yes	Unchecked
3	25	13+5	G1P0	No	Low-risk
4	21	12+3	G1P0	No	Low-risk
5	23	12+4	G1P0	No	Low-risk
6	26	12	G2P0A1	No	Low-risk
7	30	11+2	G2P0A1	No	Low-risk
8	29	13	G1P0	No	Low-risk
9	38	11+3	G1P0	Yes	Low-risk
10	25	13+2	G1P0	No	Low-risk
11	28	12+6	G2P0A1	No	Low-risk
12	24	11+6	G1P0	No	Low-risk
13	32	12+3	G2P1L1	No	Low-risk
14	26	12+4	G1P0	No	Unchecked
15	39	13+6	G1P0	Yes	Unchecked
16	31	13+5	G2P0A1	Yes	Unchecked
17	21	13+2	G1P0	No	Low-risk
18	26	13	G1P0	No	Low-risk

G: Gestation; P: Production; A: Abortion; L: Live.

Table 2 Fetal nuchal translucency measurement result

No.	NT	Nasal bone visible	Ductus venosus
1	2.0	Yes	Visible, no reverse a-wave
2	Unmeasurable	No	Invisible
3	Unmeasurable	No	Visible, no reverse a-wave
4	Unmeasurable	Yes	Invisible
5	Unmeasurable	No	Invisible
6	2.3	Yes	Visible, no reverse a-wave
7	3.8	Yes	Invisible
8	Unmeasurable	No	Visible, no reverse a-wave
9	Unmeasurable	Yes	Invisible
10	1.3	Yes	Visible, no reverse a-wave
11	1.8	Yes	Invisible
12	3.4	Yes	Visible, no reverse a-wave
13	1.1	Yes	Visible, no reverse a-wave
14	4.7	Yes	Visible, no reverse a-wave
15	2.8	Yes	Visible, no reverse a-wave
16	Unmeasurable	No	Invisible
17	3.6	Yes	Visible, no reverse a-wave
18	2.4	Yes	Visible, no reverse a-wave

NT: Nuchal translucency.

Table 3 Ultrasound sonographic analysis of limb body wall complex

No.	Ultrasonic anomaly
	Body wall defect and bulge	Spine	Limbs	Brain	Umbilical cord	Others
1	Gastroschisis (bulge is liver)	Torsion	Both feet varus	-	Short
2	Gastroschisis (bulge is liver)	Torsion	-	-	Undetectable	Cloacal malformation
3	Thoracoschisis and Gastroschisis (bulge are heart, liver, intestinal tube)	Twist into angles	-	Brain herniation	Short
4	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Twisted arrangement irregularity	-	Encephalocele	Undetectable	Fetal cystic hygroma
5	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Torsion	Miss left upper limb	Meningoencephalocele	Undetectable
6	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Curved, middle and lower segments not shown	-		Short
7	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Twist into angles	Miss one upper limb		Undetectable
8	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Abnormal bending, abnormal alignment			Short	Fetal cystic hygroma
9	Gastroschisis (bulge is liver)	Torsion		Meningoencephalocele	Undetectable
10	Gastroschisis (bulge are liver, gastric vesicle and intestinal tube)	Lordotic bending		-	Short	Single umbilical artery
11	Thoracoschisis and gastroschisis (bulge are heart, liver, intestinal tube and gastric vesicle)	Lordotic bending		-	Undetectable
12	Gastroschisis (bulge are liver, intestinal tube)	Lordotic bending		-	Short
13	Gastroschisis (bulge are liver, intestinal tube)	Angle the side		-	Short
14	Gastroschisis and malformation (bulge are liver and intestine)	Lordotic bending	Miss left upper arm	-	Short
15	Gastroschisis and malformation (bulge are liver, intestinal tube and gastric vesicle)	Side bending and twisting		-	Short	Single umbilical artery
16	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Lordotic bending	Lower limb fusion	-	Undetectable
17	Gastroschisis (bulge are liver, gastric vesicles and intestinal tubes)	Torsion	Miss right lower limb		Short
18	Acromphalus (bulge is liver)	Torsion	-		Short	Megacystis