PEA arrest, CPR, and left renal mass invading the IVC. There are areas of cortical T2 hyperintensity and restricted diffusion involving the posterior occipital and frontoparietal cortices bilaterally. There is also a punctate focus of restricted diffusion in the left cerebellar hemisphere. There are scattered foci of T2 hyperintensity in the cerebral white matter without restricted diffusion. There is perhaps trace extra-axial fluid hemorrhage along the right aspect of the posterior falx cerebri. There is mild diffuse cerebral volume loss. There is no midline shift or herniation. The major cerebral flow voids are intact. There is mild scattered paranasal sinus mucosal thickening. The orbits, skull, and scalp soft tissues are grossly unremarkable. However, there is fluid signal in the bilateral mastoid air cells, which may be related to intubation.
1. Scattered areas of restricted diffusion primarily involving the posterior occipital and frontoparietal cortices bilaterally may represent acute infarcts related to hypoxia or less likely microemboli versus perhaps a form of posterior reversible encephalopathy syndrome.2. Scattered foci of T2 hyperintensity in the cerebral white matter are nonspecific, but may represent chronic effects of small vessel ischemic disease.