Penny Review : Fetal Head & Brain

Which of the following will also typically be absent with agenesis of the corpus callosum? a) cerebellar vermis b) CSP c) 3rd vent d) 4th vent

CSP

The cisterna magna should not exceed _____ in the transcerebellar plane. a) 4 mm b) 2 mm c) 8 mm d) 10 mm

10 mm

The anechoic midline brain structure located between the frontal horns of the lateral ventricles is the? a) csp b) cavum vergae c) corpus callosum d) 4th vent

CSP

A cisterna magna that measures 15 mm and a normal appearing cerebellum is most likely? a) arnold chiari b) schizencephaly c) mega cisterna magna d) dwm

mega cisterna magna

The sunburst of the cerebral sulci is sonographic finding of: a) DWM b) agenesis of the corpus callosum c) colpocephaly d) hydranencephaly

Agenesis of the corpus callosum

The most accurate measurement for estimating gestational age? a) BPD b) HC c) transcerebellar measurement d) lateral ventricle

HC

Enlargement of the frontal horns and narrowing of the occipital horns is termed? a) holoprosencephaly b) DWM c) colpocephaly d) apert syndrome

colpocephaly

The double fold of dura mater that divides the cerebral hemispheres is the? a) cerebellum b) csp c) corpus callosum d) falx cerebri

falx cerebri

What cerebral abnormality are atypical facial features most commonly associated with ? a) dwm b) schizencephlay c) lissencephaly d) holoprosencephaly

holoprosencephaly

Which of the following would be most likely fetal cranial findings with TORCH infections? a) intracranial calcifications b) cerebral atrophy c) porencephaly d) scaphocephaly

intracranial calcifications

Following an intracranial hemorrhage a cyst is noted within the cerebrum that communicates within the lateral ventricle. This is referred to as: a) schizencephaly b) lissencephaly c) holoprosencephaly d) porencephaly

porencephaly

The development of fluid filled cleft within the cerebrum is consistent with ? a) holoprosencephaly b) lissencephaly c) schizencephaly d) hydranencephaly

schizencephaly

All of the following are sono finds of arnold chiari II except: a) enlarged massa intermedia b) hydrocephalus c) obliteration of the cysterna magna d) strawberry sign

strawberry sign

A cloverleaf skull is related to ? a) Trisomy 18 b) Meckel gruber syndrome c) Trisomy 13 d) thantophoric dysplasia

thanatophoric dysplasia

What chromosomal aberration is most often associated with holoprosencephaly? a) anopthalmia b) trisomy 21 c) trisomy 13 d) trisomy 18

trisomy 13

A strawberry shaped skull is commonly associated with ? a) trisomy 21 b) trisomy 15 c) trisomy 18 d) trisomy 13

trisomy 18

The choroid plexus cyst could be associated with an increase risk of ? a) Trisomy 13 b) Trisomy 4 c) Arnold Chiari 2 malformation d) Trisomy 18

trisomy 18

Dangling choroid sgn is associated with? a) ventriculomegaly b) hydranencephaly c) lissencephaly d) meckel gruber syndrome

ventriculomegaly

The 3rd ventricle communicates with 4th ventricle at the? a) foramen of magendie b) foramen of luschka c) foramen of monro d) aqueduct of sylvius

Aqueduct of sylvius

A lemon shaped skull is related to ? a) trisomy 18 b) arnold chiari II c) thanatophoric dysplasia d) Beckwith weidemann syndrome

Arnold chiari II

Which of the following should not be included in the correct level for a HC measurement? a) falx cerebri b) 4th ventricle c) thalamus d) csp

4th ventricle

With what structure does the posterior fossa cyst associated with DWM communicate? a) 4th ventricle b) 3rd ventrical c) cerebellar vermis d) cerebral aqueduct

4th ventricle

The 3rd 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

between the two lobes of the thalamus

The band of tissue that allows communication between the right and left cerebral hemispheres is the? a) falx cerebri b) corpus callosum c) cerebellar vermis d) csp

corpus callosum

Which of the following is located on both sides of the midline ? a) interhemispheric fissures b) 3rd and 4th vent c) lateral ventricles d) 3rd vent and cerebral aqueducts

lateral ventricles

The lack of sulci within the fetal cerebrum is reliable indicator of: a) agenesis of the corpus callosum b) lissencephaly c) schizencephaly d) porencephaly

lissencephaly

Which of the following would not be normally located within the midline of the fetal brain? a) csp b) lobes of the thalamus c) 3rd ventricle d) falx cerebri

lobes of the thalamus

A normal shaped skulls is termed? a) dolicocephaly b) brachycephaly c) mesocephaly d) scaphocephaly

mesocephaly

All of the following are sono features of alobar holoprosencephaly except? a) cyclopia b) monoventricle c) dorsal cyst d) fused thalami

dorsal cyst

The interthalamic adhesion (massa intermedia) passes through the ? a) 3rd vent b) 4th vent c) cisterna magna d) CSP

3rd ventricle

Which of the following is a genetic disorder that includes craniosynostosis, midline facial hypoplasia, and syndactyly? a) lobar holoprosencephaly b) Beckwith weidemann syndrome c) arnold chiari II syndrome d) apert syndrome

Apert syndrome

What cerebral malformation is as a result of agenesis or hypoplasia of the cerebellar vermis? a) arnold chiairi II b) schizencephaly c) mega cisterna magna d) DWM

DWM

Absence of the skull is a) hydranencephaly b) schizencephaly c) acrania d) ventriculomegaly

acrania

The most severe form of holoprosencephaly is ? a) lobar b) alobar c) semilobar d) lobular

alobar

The 4th ventricle is located? a) posterior to the csp b) between the frontal horns of the lateral ventricles c) anterior to the cerebellar vermis d) medial to the 2rd ventricle

anterior to the cerebellar vermis

The most common cause of hydrocephalus in utero is ? a) cerebral hemispheres b) holoprosencephaly c) brain tumors d) aqueductal stenosis

aqueductal stenosis

The structure located between the two lobes of the cerebellum is the ? a) cerebellar vermis b) cerebellar tonsils c) falx cerebri d) corpus callosum

cerebellar vermis

The condition in which the frontal horns are small and the occipital horns are enlarged is referred to as? a) ethmocephaly b) hydrocephalus c) colpocephaly d) encephalitis

colpocephaly

The sono finding of a fluid filled cranium with absence of cerebral tissue is consistent with? a) hydrocephalus b) hydranencephaly c) holoprosencephaly d) schizencephaly

hydranencephaly

What fetal suture is located within the frontal bone along the midline of the forehead? a) squamosal suture b) sag suture c) lanbdoidal suture d) metopic suture

metopic suture