Male, 38 years old, history of grade 2 oligodendroglioma status post radiation and chemotherapy. T2 hyperintensity of the left frontal white matter and cortex is again seen with mild associated cortical thickening. The central region of this tissue demonstrates cystic degeneration. There has been no significant interval change in the appearance of this tissue, and no pathologic enhancement is appreciated.Ill-defined bilateral periventricular T2 hyperintensity is unchanged as well, likely related to treatment. No new parenchymal signal abnormality is detected. No significant mass effect or edema is seen. The ventricles are stable in size and configuration. Enhancement and osseous thickening along the right orbital roof is unchanged possibly representing a site of fibrous dysplasia.
No change in the appearance of the treated left frontal lesion.