Anaplastic oligodendroglioma, WHO grade III, status post treatment. There are postoperative findings related to left craniotomy with a resection cavity in the left frontal and temporal lobes and a persistent overlying extra-axial fluid collection. There is intrinsic T1 hyperintensity and susceptibility effect along the posterior margins of the surgical cavity, without definite nodular enhancement. There is unchanged confluent T2 hyperintensity in the surrounding brain parenchyma. There is no evidence of acute infarct. The ventricular system appears unchanged. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Post-treatment findings in the left the left frontal and temporal lobes without evidence interval tumor progression.