DMS 2210 Penny Chapter 24

Lobes of the thalamus

All of the following are midline brain structures except (Interhemispheric fissure, cavum septum pellucidum, lobes of the thalamus, third ventricle)

Strawberry sign

All of the following are sonographic findings of Arnold-Chiari II malformation except (Enlarged massa intermedia, hydrocephalus, obliteration of the cisterna magna, strawberry sign)

lissencephaly

Lack of sulci within the fetal cerebrum is a reliable indicator of

Trisomy 18

The choroid plexus cyst could be associated with an increase risk of

10 mm

The cisterna magna should not exceed ____ in the transcerebellar plane

Schizencephaly

The development of fluid-filled cleft within the cerebrum is consistent with

Falx cerebri

The double fold of dura mater used to divide the cerebral hemispheres is the

Anterior to the cerebellar vermis

The fourth ventricle is located

Third ventricle

The interthalamic adhesion (massa intermedia) passes through the

Thanatophoric Dysplasia

A clover leaf shaped skull is related to

Spina bifida and Arnold-Chiara Malformation

A lemon shaped skull is related to

Trisomy 18

A strawberry shaped skull is commonly associated with

Dandy walker malformation

Agenesis or hypoplasia of the cerebellar vermis results in what cerebral malformation

Dorsal Cyst

All of the following are sonographic features of alobar holosencephaly except ( Cyclopia, monoventricle, dorsal cyst, fused thalamus)

Holoprosencephaly

Atypical facial features are most commonly associated with what cerebral anatomy?

Ventriculomegaly

Dangling choroid sign is synonymous with

dandy walker malformation

Elevation of the tentorium and an enlarged cisterna magna that communicates with a dilated fourth ventricle is consistent with

Porencephaly

Following an intracranial hemorrhage, a cyst is noted within the cerebrum that communicates with the lateral ventricle. This is referred to as

Aqueductal stenosis

Most common cause of hydrocephalus in utero

Hydranencephaly

Sonographic finding of a fluid filled cranium with absence of the cerebral tissue is consistent with

Cavum septum pellucidum

The anechoic midline brain structure located between the frontal horns of the lateral ventricles is the

Corpus Callosum

The band of tissue that allows communication between the right and left cerebral hemispheres is the

Head circumference

The most accurate measurement at the estimating gestational age from the below list is the

Alobar

The most severe form of holoprosencephaly is

Between the two lobes of the thalamus

The third ventricle is located

Trisomy 13

What chromosomal aberration is most often associated with holosencephaly?

Copocephaly

Condition in which the frontal horns are small and the occipital horns are enlarged is referred to as

Cerebellar vermis

The structure located between the two lobes of the

Agenesis of the corpus callosum

The sunburst of the cerebral sulci is sonographic finding of

Aqueduct of Sylvius

The third ventricle communicates with the fourth ventricle at the