Alobar holoprosencephaly
Presentation
Increased head circumference
Patient Data
Age: 3 years
Gender: Male
From the case:
Alobar holoprosencephaly
MRI
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Sagittal T1
The MRI sequences demonstrate
- a single midline monoventricle, communicating with a large dorsal cyst of holoprosencephaly which extends inferiorly and compresses the left cerebellar hemisphere with tonsilar herniation through the foramen magnum
- absent midline structures (septum pellucidum, corpus callosum, interhemispheric fissure, and falx cerebri)
- fused thalami
- the frontal cerebral cortex crosses the midline anteriorly
Associated hypotelorism
Case Discussion
Case showing the MRI features of alobar holoprosencephaly with associated hypotelorism
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