74-year-old female with altered mental status. Evaluate for stroke. Large focal left hypodensity within the extra-axial space with septations and mass effect. This finding could represent a chronic subdural hematoma. Further imaging evaluation with MRI may be considered, if clinically warranted. Mild microangiopathic changes of indeterminate age.The ventricles and basal cisterns are normal in size and configuration.The calvaria and skull base are radiographically normal. The visualized paranasal sinuses and mastoid air cells are normally pneumatized.
Large focal hypodensity may be due to chronic subdural hematoma but would be better evaluated with MRI, if clinically warranted.