Clinical question: Cerebral edema. Signs and symptoms: Altered mental status. Nonenhanced head CT:There is no evidence of acute intracranial hemorrhage, edema, mass-effect, midline shift or hydrocephalus. The cortical sulci, ventricular system, CSF cisterns and gray -- white matter differentiation remains within normal. No evidence of any new findings since prior study. Considering provided clinical date of bone these last two CT examinations and negative CTs of the brain follow with an MRI is recommended.Calvarium, visualized paranasal sinuses, orbits and mastoid air cells are unremarkable.
Negative nonenhanced CT of brain and calvarium.