Figure 10a. Anaplastic oligodendroglioma. (a) Axial T1-weighted MR image shows a mass in the right temporal lobe (arrows) with both soft-tissue and cystlike components. (b) Axial T2-weighted MR image shows heterogeneity of the mass and minimal surrounding vasogenic edema. (c) Axial contrast-enhanced MR image shows irregular ring-like enhancement of the mass (arrowheads). This appearance mimics that of a glioblastoma multiforme.