Grade 2 oligoastrocytoma. There are postoperative findings related to right frontal lobe tumor resection. There is confluent high T2 signal surrounding a 35 mm diameter surgical cavity, which appears to be unchanged, but no mass-like abnormal enhancement. There is no evidence of acute infarct. There is ex vacuo dilatation of the right lateral ventricle. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
No evidence of tumor progression in the treated right frontal lobe region.