Primary CNS lymphoma treatment last year: re-staging. There are post-treatment findings in the left frontal lobe with unchanged areas of patchy T2 hyperintensity with scattered susceptibility effect and mild ex vacuo dilatation of left frontal horn. There are also unchanged foci of high T2 signal in the right anterior frontal lobe. However, there is no evidence of abnormal enhancement to suggest recurrent tumor. There is no evidence of acute infarct. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are unchanged.
No evidence of recurrent intracranial central nervous system lymphoma.