Presentation
Collapse.
Patient Data
The lateral and third ventricles are enlarged without convincing transependymal oedema to suggest that there is an acute component. The fourth ventricle appears normal in size.
Lateral and third ventricles are enlarged without convincing transependymal oedema to suggest that there is an acute component. The fourth ventricle is normal in size as are the basal cisterns. In view lower third of the aqueduct and a thin-wall when is present and no CSF flow is demonstrated in the aqueduct on CSF flow studies. The remainder of the brain is unremarkable in appearance.
Features are those of aqueduct stenosis due to a web.
Case Discussion
Aqueduct stenosis due to a web is relatively frequent and often found incidentally.