Case 8: A-B: Axial and sagittal sections of MRI scans showing an enhancing contrast tumor in the pineal region, below the tentorium. C: CTA image showing intense tumor staining. The tumor is supplied by the posterior cerebral and superior cerebellar arteries (arrow). D: Exposure of the tumor (T) after sectioning of the tentorium (green arrow), and cerebral falx (black arrow). E: Histopathological section of the tumor showing a vascular WHO grade I meningioma (HE, x200). F: Postoperative contrast-enhanced sagittal section of the MRI showing no residual tumor.