chapter 25 review questions

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the thickness of the nuchal fold in the second trimester should not exceed

6mm

the fetal lip typically closes by

8 weeks

a cystic hygroma is the result of

An abnormal accumulation of lymphatic fluid within the soft tissue

the absence of the eyes is termed

Anophthalmia

macroglossia is most commonly found with

Beckwith-Wiedemann syndrome

a group of abnormalities associated with the entrapment of fetal parts and fetal amputations is

amniotic band syndrome

the most common cause of hypertelorism is

anterior cephalocele

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

beckwith-wiedemann syndrome

the nuchal fold measurement is typically obtained

between 15 and 21 weeks

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

binocular diameter

which of the following is a benign congenital neck cysts found most often near the angle of the mandible

brachial cleft cyst

at what level is the nuchal fold measurement obtained

cavum septum pellucidum

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

cebocephaly

an abnormal division in the lip is referred to as

cleft lip

fusion of the orbits is termed

cyclopia

a large, mostly cystic mass containing a thick midline septation is noted in the cervical spine region of a fetus. this most likely represents a

cystic hygroma

all of the following are sonographic features of holoprosencephaly except

cystic hygroma

nuchal thickening is most commonly associated with

down syndrome

there is a definite link between microtia and what syndrome

down syndrome

which of the following is also referred to as trisomy 21?

down syndrome

An oral teratoma is referred to as

epignathus

which of the following conditions does not affect the orbits?

epignathus

the condition in which there is no nose and a proboscis seperating to close-set orbits is

ethmocephaly

the isolated enlargement of the fetal thyroid is referred to as

fetal goiter

facial anomalies when discovered should prompt the sonographer to analyze the brain closely for signs of

holoprosencephaly

an increase distance between the orbits is referred to as

hypertelorism

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

hypotelorism

which of the following would be most difficult to detect sonographically

isolated cleft palate

an unusual protuberance of the tongue is termed

macroglossia

a small mandible is termed

micrognathia

what is the term for a smaller than normal ear

microtia

which of the following may also be referred to as turner syndrome

monosomy X

the most common location of a cystic hygroma is within the

neck

the optimal scan plane to visualize micrognathia is

sagittal

the most frequently encountered chromosomal abnormality associated with holoprosencephaly is

trisomy 13

which of the following is also referred to as patau syndrome?

trisomy 13

micrognathia is a condition found in

trisomy 18

an absent or hypoplastic nasal bone is most likely associated with

trisomy 21

an increases nuchal fold is most likely associated with

trisomy 21

which of following would most likely involve the development of a cystic hygroma?

turner syndrome


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