Brain lesion, preop planning: left side weakness. There are postoperative findings related to parieto-occipital craniotomy. There are multiple foci of extra-axial tumor along the posterior falx cerebri and tentorial leaflets with associated extensive vasogenic edema in the adjacent brain parenchyma bilaterally superimposed upon right occipital lobe encephalomalacia with ex vacuo dilatation of the right lateral ventricle. Tumor appears to extend into the superior sagittal sinus. Skin-based fiducial markers are present.
Preoperative planning MRI demonstrates multiple foci of recurrent meningioma along the posterior falx cerebri and tentorial leaflets with associated extensive vasogenic edema in the adjacent bilateral cerebral hemispheres.