chapter 58

Question 1

Fetal crown-rump length should be within the range of

Answer 1

45 to 84mm

Question 2

An NT shouldn’t measure above

Answer 2

3mm and the thicker the NT is greater the chance the fetus will be affected

Question 3

Tongue protusion/ Enlarged tongue

Answer 3

Macroglossia which is found in the beckwith Wiedemann syndrome

Question 4

should be suspected when seeing a small chin

Answer 4

macrognathia

Question 5

Tumors such as _______ or a teratoma may disrupt the facial contour in the sagittal plane

Answer 5

epignathus

Question 6

smallness of one side of the face is called

Answer 6

hemifacial microsomia

Question 7

rare anomaly absence of the mandible causes the ears to form close together anteriorly towards the neck

Answer 7

Otocephaly

Question 8

small eyes

Answer 8

Microphthalmia

Question 9

absent eyes

Answer 9

Anophthalmia

Question 10

Decreased distance between orbits. Included in a lot of other anomalies such as holoprosencephaly

Answer 10

Hypotelorism

Question 11

Abnormally wide-spaced orbits

Answer 11

Hypertelorism

Question 12

The NT is measured at

Answer 12

10-14 weeks

Question 13

The maxillary prominences grow medially between

Answer 13

fifth and eighth week

Question 14

causes fetal cranium to become abnormally shaped

Answer 14

Craniosynostosis

Question 15

Associated with Holoprosencephaly, Microcephaly, Craniosynostose, Phenylketonuria (PKU)

Answer 15

Hypotelorism

Question 16

occurs together when they both fuse

Answer 16

cleft lip and palate

Question 17

Most common facial abnormalities

Answer 17

cleft lip with or without palate

Question 18

occurs because of failure to fuse primary and secondary palate

Answer 18

Cleft lip

Question 19

occurs when lateral palatine processes fail to fuse in midline

Answer 19

Cleft palate

Question 20

Caused by incomplete merging of the two medial nasal prominences in the midline

Answer 20

Median cleft lip

Question 21

Failure of maxillary prominence to merge with the lateral nasal swelling, with exposure of the nasolacrimal duct

Answer 21

Oblique facial cleft

Question 22

Large gap in upper lip on modified coronal view; nose is flattened and widened; a premaxillary mass may be present

Answer 22

Complete bilateral cleft lip and palate

Question 23

Incomplete fusion of maxillary prominence to the medial prominence on one side; modified coronal view

Answer 23

Unilateral complete cleft lip and palate

Question 24

Nose is intact; modified coronal view of lip

Answer 24

Incomplete cleft

Question 25

Thyromegaly

Answer 25

fetal goiter

Question 26

Results from a malformation of the lymphatic system that leads to single or multiloculated lymph filled cavities around the neck

Answer 26

cystic hygroma