Presentation
Previous subarachnoid hemorrhage.
From the case:
Trapped 4th ventricle
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The fourth ventricle is markedly enlarged with enlargement also present of the 3rd and lateral ventricles (incompletely imaged).
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
Case Discussion
Trapped ventricle, also known as isolated ventricle, is a condition in which there is obstruction to the entry and exit path of CSF through the ventricle.