Number

Age (year)

Gestation

Parity

CRL (mm)

NT (mm)

NT MoM

Ultrasound 2

Combined test

Karyotype

1

27

1

1

56

3.3

2.1

DW malformation

1:50

47XY,+21

2

37

0

0

51

2.5

1.8

Normal

1:179

47XY,+21

3

37

4

2

65

1.7

1.0

Normal

1:247

47XY,+21

4

37

3

3

51

0.8

0.6

Normal

1:145

47XY,+21

5

24

0

0

59

2.6

1.7

Normal

1:54

47XY,+21

6

42

2

2

59

2.9

1.8

Normal

1:133

47XY,+21

7

30

1

1

53

2.0

1.4

Normal

1:50

47XX,+21

8

32

1

1

45

2.8

2.2

Normal

1:238

47XX,+21

9

30

0

0

63

2.1

1.2

Absence of NB

1:255

47XY,+21

10

24

0

0

45

2.8

2.2

Normal

1:70

47XY,+21

11

29

1

1

66

2.6

1.4

Normal

1:21

47XY,+21

12

26

1

1

47

2.5

1.9

Normal

1:54

47XY,+21

13

28

0

0

64

2.4

1.4

Absence of NB

1:10000

47XY,+21

14

27

1

1

51

2.7

1.9

Normal

1:106

47XY,+21

15

34

1

1

66

6.0

3.3

Poly-malformation

1:51

47XY,+21

16

33

1

1

61

2.8

1.7

Normal

1:50

47XX,+21

(DW malformation: Dandy-Walker malformation, NB: Nasal bone)
Table 1: 16 cases of trisomy 21 in related to the maternal and fetal characters, ultrasound scanning in the second trimester and the combined test.
Goto home»