66-year-old male with acute brainstem infarct. Evaluate for further swelling/progression of infarct. There is no evidence of intracranial hemorrhage or midline shift. There is increased hypodensity in the left cerebellar region consistent with an evolving infarct. An area of hypodensity on a single image in the right cerebellar hemisphere is identified. There is a previously described area of encephalomalacia on the image inferior to this slice. This could represent volume averaging versus an additional area of infarct. If clinically indicated, an MRI could be considered for further evaluation.The ventricles and basal cisterns are normal in size and figuration. There is opacification of the ethmoid air cells and mucoperiosteal thickening in the bilateral maxillary and sphenoidal sinuses.
Evolving cerebellar infarct. Area of hypodensity in the right cerebellar hemisphere on a single image may represent volume averaging or an additional area of infarct. An MRI may be considered for further evaluation if clinically indicated.