37-year-old female with history of endoscopic repair of CSF leak an encephalocele repair. Rule out subdural hemorrhage. The area of low attenuation in the right frontal lobe is again seen. This could represent vasogenic edema, however, to exclude other etiologies, contrast enhanced CT or MRI should be performed. Previous area of high attenuation in the right frontal lobe is less conspicuous. There is no new additional evidence of intracranial hemorrhage, mass or edema. The ventricles and basal cisterns are normal in size and configuration.The calvaria and skull base are radiographically normal. Post-surgical changes with sinus opacity of the sphenoid, right ethmoid, and maxillary sinuses. Right-sided frontal sinuses are also opacified. The mastoid air cells are normally pneumatized.
Area of low attenuation in the right frontal lobe could represent vasogenic edema, though other etiologies should be excluded on MRI or contrast enhanced CT.