Right parietal burr holes.
The subdural and parafalcine collections have increased in volume from the presentation CT, despite two operations for drainage. There is peripheral enhancement and restricted diffusion of these collections, as well as within the frontal, right sphenoid and right maxillary sinuses.
New from the CT is a 25 mm peripherally enhancing collection in the right frontal lobe, at the site of hypoattenuation. Although the peripheries demonstrate restricted diffusion, the centre of the collection does not have low ADC value which would be expected for an abscess. (Follow up MRI however did "fill in" more consistent with pus).
There are also areas of FLAIR hyperintensity around the right frontal collection and in the right parietal and temporal cortices, suggesting further regions of cerebritis.