49 year old male patient with history of oligodendroglioma. Evaluate for growth of the grade III oligodendroglioma. There are postsurgical changes of a left superior frontal lobe resection with the resection cavity appearing similar in size compared to the prior study. A rim of T2 hyperintensity around the cavity margins which extends into the corona radiata of the left frontal lobe and inferiorly to the roof of the left lateral ventricle continues to demonstrate slight gradual progression in size across multiple prior studies. There is additional slight interval increase in T2 hyperintensity within the white matter of the right corona radiata. There is no suspicious enhancement with unchanged nodular enhancement projecting into the cavity from the midline falx and linear enhancement along the posterior inferior cavity margin. Susceptibility artifact surrounding the cavity margins is compatible with chronic blood product.A few scattered foci of non-specific T2 hyperintensity seen elsewhere in the brain are not significantly changed. There are no additional areas of pathologic enhancement or extra-axial enhancement are identified. There is no midline shift or herniation. The ventricles are stable in size and configuration.
Post-surgical changes of left frontal tumor resection. There is slight gradual progression of nonenhancing T2 hyperintensity along the resection cavity margin in the left frontal lobe white matter and the contralateral right frontal corona radiata compared to the past few studies. Given history radiation, this may represents evolving post-treatment changes but recommend continued attention on follow-up.