There is marked dilatation of the lateral and third ventricles with significant compression of the midbrain. There are extensive T1 hypointensities and T2/FLAIR hyperintensities in the periventricular region extending into the deep white matter representing transependymal seepage of CSF.
The fourth ventricle is within normal limits.
There is ballooning of the sella with partial empty sella suggestive of raised intracranial pressure.