NTDs
Absent CSP, "teardrop sign" in occipital horns, narrow frontal horns, and high riding third ventricle
What is agenesis of the Corpus Callosum?
The most common disorder of the neonatal brain.
What is ventriculomegaly?
This is a normal variant that typically regresses during follow-up evaluation.
What is connatal cysts?
Most hemorrhages occur within the first 3 ______ of life.
What are days?
In Hydranencephaly, brain tissue is destroyed and the cerebrum is replaced with this
What is CSF?
Congenital anomaly associated with spina bifida
What are Chiari malformations?
The most common cause of both acquired and congenital hydrocephalus.
What is aqueductal stenosis?
If these are greater than 10mm or multiple, they are typically associated with T9 or T18.
What are choroid flexus cysts?
This grade of IVH occurs in approximately 40% of preemies and involves the germinal matrix.
What is Grade I?
Cebocephaly, cyclopia, and ethmocephaly are present in this most severe form that is associated with T13.
What is alobar holoprosencephaly
Type II Arnold-Chiari Malformations associate most commonly (80-90%) with these
What are myelomeningoceles?
The final destination CSF goes to after leaving the fourth ventricle (& foramens).
What is subarachnoid spaces?
These are most commonly the result of the sequela of a germinal matrix hemorrhage in preemies.
What are subependymal cysts?
The echogenicity of an acute IVH is equal to or _______ than the choroid plexus.
What is greater than?
Porencephalic cysts most often result from delivery trauma, infarction, and this common condition in preemies.
What is hemorrhage (grade IV IVH)
Fourth ventricle cyst that occcupies the occipital space that is characterized by the absence or hypoplasia of the cerebellar vermis, absent corpus callosum
What is Dandy-Walker Malformation?
In this type of hydrocephalus, the entire ventricular system is uniformly distended.
What is communicating hydro?
Dilation of the vein of Galen is caused by a vascular ___________ fed by large arteries off the ACA & PCA
What is a malformation?
Most hemorrhages are caused by a capillary bleed in the ____________ ________ ______.
What is subependymal germinal matrix?
Holoprosencephaly arises from failure of cleavage of this early in gestation.
What is the prosencephalon?
Presence of this is noted in 40-70% of Arnold-Chiari Malformations
What is aqueductal stenosis?
This type of matter in newborns is pliant and easily compressible.
What is white matter?
These are sonolucent structures arising from the quadrigeminal plate cistern, usually resulting from subdural hematoma.
What are arachnoid cysts?
The most frequent location of intraventricular hemorrhages that is between the thalamus and caudate nucleus
What is caudothalamic groove?
This condition has a near complete separation of hemispheres with the development of a falx and an absent CSP
What is lobar holoprosencephaly?