Right frontal extraventricular drain tube, with reduced ventricular size compared to previous CT brain.
Trace of sulcal T2 FLAIR hyperintensity superiorly and diffusion restricting material layering in the occipital horns is compatible with meningitis and ventriculitis.
There are also parenchymal areas of diffusion restriction and T2 hyperintensity bilaterally, the largest involving the posterior cerebellum bilaterally adjacent to the falx cerebelli and the splenium of the corpus callosum. There are also several scattered punctate cortical foci of diffusion restriction.
The small cortical foci are presumably infarcts. The larger foci are not in typical vascular territories, but in this clinical context are still most likely infarcts. The differential would be encephalitis.