Disorientation, unspecified [R41.0], Reason for Study: ^Reason: R/O CNS lymphoma History: HIV patient with AMS Especially post contrast scans' image quality are significantly degraded due to motion artifact. No evidence of acute ischemic or hemorrhagic lesion.Minimal high signal intensities on bihemispheric periventricular white matter and minimal brain atrophy are seen which are non specific. The FLAIR/T2 high signal intensity lesions are not confluent nor mainly located on deep white matter. Comparing to prior scan, there is no significant interval change. 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 mastoid air cells are clear.Sphenoid sinus shows mucosal thickening.
Unchanged non specific periventricular white matter FLAIR high signal intensity with minimal to mild diffuse brain atrophy since prior scan.No evidence of acute ischemic or hemorrhagic lesion.