Obstructive hydrocephalus due to aqueduct stenosis with secondary intracranial hypertension
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Chronic headaches with bilateral papilledema.
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The MRI sequences demonstrate:
- dilatation of the 3rd and lateral ventricles with mild transependymal edema. The sagittal FIESTA shows aqueduct stenosis (web/diaphragm) with normal size and configuration of the 4th ventricle
- Signs of secondary intracranial hypertension
- vertical tortuosity of the optic nerves
- prominent subarachnoid space around the optic nerves
- bilateral flattening of the posterior sclera
- mild enlargement of the Meckel cave
MRI features of obstructive hydrocephalus due to aqueduct stenosis (web/diaphragm) with secondary intracranial hypertension.