Oligodendrogliomas (World Health Organization grade II) are among the slowest-growing gliomas. They are most common in the forebrain, particularly the frontal lobes. Image: This T2-FLAIR (fluid-attenuating inversion recovery) MRI scan shows a white signal, which may indicate a mass or edema. The left frontal signal is highly demarcated, suggesting a mass. Use of contrast does not enhance it. It is a low-grade (grade II) oligodendroglioma #braintumor #glioma