Penny Chapter 24: The Fetal Head and Brain Review Questions
which of the following would be the most likely fetal cranial findings with TORCH infections? a. intracranial calcifications b. cerebral atrophy c. porencephaly d. scaphocephaly
a. intracranial calcifications
the most severe form of holoprosencephaly is:
b. alobar
the band of tissue that allows communication between the right and left cerebral hemispheres is the:
b. corpus callosum
which of the following should not be included in the correct level for an HC measurement? a. falx cerebri b. fourth ventricle c. thalamus d. CSP
b. fourth ventricle
which of the following would not be normally located within the midline of the fetal brain? a. CSP b. lobes of the thalamus c. third ventricle d. falx cerebri
b. lobes of the thalamus
absence of the skull is:
c. acrania
the third ventricle is located: a. anterior to the thalamus b. anterior to the cerebellar vermis c. between the two lobes of the thalamus d. superior to the corpus callosum
c. between the two lobes of the thalamus
all of the following are sonographic features of alobar holoprosencephaly except: a. cyclopia b. monoventricle c. dorsal cyst d. fused thalamus
c. dorsal cyst
which of the following is located on both sides of the midline? a. interhemispheric fissures b. third and fourth ventricles c. lateral ventricles d. third ventricle and cerebral aqueduct
c. lateral ventricles
a cisterna magna that measures 15mm and a normal appearing cerebellum is most likely:
c. mega cisterna magna
a normal shaped skull is termed:
c. mesocephaly
the third ventricle communicates with the fourth ventricle at the:
d. aqueduct of Sylvius
the structure located between the two lobes of the cerebellum is the:
!!! a. cerebellar vermis
with what structure does the posterior fossa cyst associated with DWM (Dandy-Walker Malformation) communicate?
!!! a. fourth ventricle
the interthalamic adhesion (massa intermedia) passes through the:
!!! a. third ventricle
dangling choroid sign is associated with:
!!! a. ventriculormegaly
which of the following will also typically be absent with agenesis of the corpus callosum? a. cerebellar vermis b. CSP c. third ventricle d. fourth ventricle
!!! b. CSP
all of the following are sonographic findings of Arnold-Chiari II malformation except: a. enlarged massa intermedia b. hydrocephalus c. obliteration of the cisterna magna d. strawberry sign
!!! d. strawberry sign
the choroid plexus cyst could be associated with an increased risk of:
!!! d. trisomy 18
following an intracranial hemorrhage, a cyst is noted within the cerebrum that communicates with the lateral ventricle. this is referred to as:
!!!. d. porencephaly
a cloverleaf-shaped skull is related to:
!!!. d. thanatophoric dysplasia
the most accurate measurement for estimating gestational age is:
a. BPD
the anechoic midline brain structure located between the frontal horns of the lateral ventricles is the:
a. CSP
a lemon-shaped skull is related to:
b. Arnold-Chiari II malformation
the "sunburst" of the cerebral sulci is a sonographic finding of:
b. agenesis of the corpus callosum
what chromosomal aberration is most often associated with holoprosencephaly?
c. trisomy 13
a strawberry-shaped skull is commonly associated with:
c. trisomy 18
the cisterna magna should not exceed ______ in the transcerebellar plane
d. 10mm
the sonographic finding of a fluid-filled cranium with absence of cerebral tissue is consistent with:
!!! b. hydranencephaly
the lack of sulci within the fetal cerebrum is a reliable indicator of:
!!! b. lissencephaly
the fourth ventricle is located:
!!! c. anterior to the cerebellar vermis
enlargement of the frontal horns and narrowing of the occipital horns is termed:
!!! c. colpocephaly
the condition in which the frontal horns are small and the occipital horns are enlarged is referred to as:
!!! c. colpocephaly
the development of fluid-filled cleft within the cerebrum is consistent with:
!!! c. schizencephaly
what fetal suture is located within the frontal bone along the midline of the forehead?
!!! d. metopic suture
what cerebral malformation is as a result of agenesis or hypoplasia of the cerebellar vermis?
!!! d. DWM
which of the following is a genetic disorder that includes craniosynostosis, midline facial hypoplasia, and syndactyly?
!!! d. apert syndrome
the most common cause of hydrocephalus in utero is?
!!! d. aqueductal stenosis
the double fold of dura mater that divides the cerebral hemispheres is the:
!!! d. falx cerebri
what cerebral abnormality are atypical facial features most commonly associated with?
!!! d. holoprosencephaly
