Axial noncontrast head CT acquired 5 days earlier (for comparison). There is no acute intracranial abnormality. Specifically, there is no acute hemorrhage, extra-cranial collection, or hydrocephalus.
Metallic artifact is present in the region of the ACOM, consistent with prior coiled aneurysm. Lucencies are present in the bifrontal white matter, which is related to prior shunt tracts.