Presentation
Confusion.
Patient Data
There is a isodense extra axial collection that overlies the left cerebral hemisphere that exerts minimal mass effect with minor adjacent sulcal effacement. No midline shift. No intraparenchymal or intraventricular hemorrhage. The basal cisterns are unremarkable. Bilateral patchy white matter hypo attenuation reflects chronic small vessel ischemic disease.
Incidental hyperdense extra-axial mass indents the left inferior frontal gyrus, which represents a meningioma.
Hyperostosis frontalis interna. No suspicious osseous lesion.
Conclusion
- Subacute left subdural hematoma with no significant mass effect.
- Incidental meningioma.
Case Discussion
Isodense SDH and incidental calcified meningioma.