CT HEAD WITHOUT CONTRAST:
CLINICAL HISTORY: 66-year-old with postoperative extra-axial collection, nonreactive pupil.
FINDINGS:
Visualized paranasal sinuses: Clear.
Mastoid air cells: Clear.
Additional comment: None.
IMPRESSION:
1. Significant interval increase in right frontal and parietal infarct with associated edema resulting in significant midline shift to 16 mm, subfalcine and uncal herniation, and entrapment of the left lateral ventricle. Degree of extra-axial hemorrhage is without significant change in size from prior exam, change in mass effect is primarily due to parenchymal swelling.