A 70 year-old woman presented with a several-week history of confusion. Panels (A, B): Non-contrast and contrast-enhanced head CT shows a large bifrontal lesion with calcifications and surrounding edema. Panels (C, D): Non-contrast and contrast-enhanced T1-weighted axial MR images of the head also demonstrate large flow voids representing blood vessels in the center of the tumor. Panel (E): Non-contrast T1-weighted sagittal MR image. Panel (F): Contrast-enhanced T1-weighted coronal MR image.