CT evidence of extra-axial mass on the left frontal lobe. Seizure, right-sided weakness There is a 20 x 22 x 21.5 mm sized extra-axial mass on the left frontal lobe. The mass is compressing the left side paracentral lobule. There is brain edema on the left paracentral lobule.On contrast enhanced images, the mass shows relatively homogeneously enhancing with the multiple lobulation. In addition, there is a tumor extension towards superior sagittal sinus without showing evidence of obstruction.There is no evidence of superior sagittal sinus occlusion.Bihemispheric dural thickening and enhancement may indicate previous surgery related changes, no change since prior scan.There is no evidence of acute ischemic or hemorrhagic lesion on the scanOn gradient echo images, there are susceptibility artifacts on the left central sulcus which is corresponding to postoperative changes demonstrated on postoperative CT scan. In addition, scattered nodular susceptibility lesions on bilateral frontal lobes which indicate parenchymal calcifications or chronic hemorrhagic lesions do not show any interval change since prior scan.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Interval recurrence of left frontal lobe extra dural mass likely represent meningioma as described above.2. Evidence of tumor extension towards superior sagittal sinus as described above.3. Diffuse thickening with enhancing bihemispheric dura, no change since prior scan.