CH 25

Question 1

The absence of the eyes is termed:

Answer 1

Anophthalmia

Question 2

A reduction in the distance between the orbits is referred to as:

Answer 2

Hypotelorism

Question 3

The most frequently encountered chromosomal abnormality associated with holoprosencephaly is:

Answer 3

Trisomy 13

Question 4

The fetal lip typically closes by:

Answer 4

8 weeks

Question 5

The most common cause of hypertelorism is:

Answer 5

Anterior cephalocele

Question 6

Macroglossia is most commonly found with:

Answer 6

Beckwith-Wiedemann syndrome

Question 7

An oral teratoma is referred to as:

Answer 7

Epignathus

Question 8

Cleft lip and cleft palate may exist with:

Answer 8

Amniotic band syndrom, holoprosencephaly, and Trisomy 13

Question 9

An increase distance between the orbits is referred to as:

Answer 9

Hypertelorism

Question 10

The optimal scan plane to visualize micrognathia is:

Answer 10

Sagittal

Question 11

A cystic hygroma is the result of:

Answer 11

An abnormal accumulation of lymphatic fluid within the soft tissue

Question 12

A cystic hygroma is found in all of the following conditions except:

• Edwards syndrome
• Hydranencephaly
• Turner Syndrome
• all

Answer 12

Hydranencephaly

Question 13

Nuchal thickening is most commonly associated with:

Answer 13

Down Syndrome

Question 14

Micrognathia is a condition found in:

Answer 14

Trisomy 18

Question 15

The most common location of a cystic hygroma is within the:

Answer 15

Neck

Question 16

An unusual protuberance of the tongue is termed:

Answer 16

Macroglossia

Question 17

Facial anomalies, when discovered, should prompt the sonographer to analyze the brain closely for signs of:

Answer 17

Holoprosencephaly

Question 18

The measurement obtained between the lateral walls of the orbits is referred to as the:

Answer 18

Binocular diameter

Question 19

A large, mostly cystic mass is noted in the cervical spine region of a fetus. This most likely represents a:

Answer 19

Cystic hygroma

Question 20

A group of abnormalities associated with the entrapment of fetal parts and fetal amputation is:

Answer 20

Amniotic band syndrome

Question 21

The growth disorder syndrome synonymous with organ, skull, and tongue enlargement is:

Answer 21

Beckwith-Wiedemann syndrome

Question 22

Which of the following is also referred to as Patau syndrome?

Answer 22

Trisomy 13

Question 23

Close-set eyes and a nose with a single nostril is termed:

Answer 23

Cebocephaly

Question 24

An abnormal division in the lip is referred to as:

Answer 24

Cleft lip

Question 25

Fusion of the orbits is termed:

Answer 25

Cyclopia

Question 26

Which of the following is also referred to as Trisomy 21?

Answer 26

Down Syndrome

Question 27

The thickness for the nuchal fold in the second trimester should not exceed:

Answer 27

6 mm

Question 28

A small mandible is termed:

Answer 28

Micrognathia

Question 29

The condition in which there is no nose and a proboscis separating two close-set orbits is:

Answer 29

Ethmocephaly

Question 30

All of the following are sonographic features of holoprosencephaly except:

Answer 30

Cystic hydroma