Fig. 1

Neuroimaging of original brain tumor. M1 Preoperative T1 axial, sagittal with Gd MRI showing highly vascular extra-axial mass on left sphenoid area. Lateral sphenoid ridge meningioma that compressed the brain and caused a shift of the midline structure; M2 Preoperative T1 coronal and sagittal Gd MRI showing hypercellular mass left sigmoid-transverse sinus junction. This tumor was attached to the sinus and compressed cerebellum; M3 Preoperative T1 axial coronal Gd MRI showing right convexity meningioma. This tumor arose from the dura, and invaded right frontal lobe; M4 Preoperative T1 coronal, sagittal Gd MR showing convexity meningioma that compressed the right frontal lobe. This hyper-intense mass attached to the dura was well marginated; M5 Postoperative T2-weighted axial T1 Gd sagittal MRI showing remaining fuzzy mass that invaded and attached to the left motor cortex; this falx meningioma showed some peritumoral edema