Primary CNS lymphoma, status post chemotherapy and stem cell transplant. There is no intracranial mass or abnormal parenchymal or leptomeningeal enhancement to suggest lymphoma recurrence. Previous is seen patchy T2-hyperintense signal involving the periventricular and deep cerebral white-matter as well as the left lateral cerebellar hemisphere is not significantly changed since the prior examination. The frontal horn of the right lateral ventricle remains small while the remainder of the ventricular system as well as the other CSF-containing spaces remain enlarged reflecting underlying brain volume loss. There is no acute infarct or acute intracranial hemorrhage. Bilateral lens implants. Calvarium and extracranial soft tissues are grossly unremarkable.
1.No evidence of recurrent lymphoma.2.Unchanged brain white-matter signal abnormality likely representing a combination of sites of prior lymphomatous disease with superimposed posttreatment change and chronic microvascular ischemia.