Primary CNS lymphoma, restaging. Post chemotherapy and transplantation. Redemonstration of right cerebral hemispheric posttreatment related lesion, and particular, postbiopsy encephalomalacic and hemosiderin deposition, no change since prior study.Multifocal patch and slightly asymmetric scattered nodular high signal intensity lesions on FLAIR imaging on bilateral periventricular white matter and centrum semiovale do not show any significant interval change since prior scan.Multifocal signal voids indicating susceptibility artifacts on gradient echo images on bilateral basal ganglia, do not show any interval change since prior scan.There is no evidence of abnormal enhancement.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
Post treatment changes on the right cerebellar hemisphere, no change since prior scan.Periventricular and centrum semiovale white matter high signal intensities on FLAIR imaging do not show any significant interval change since prior scan.No evidence of abnormal enhancement.