Acute disseminated encephalitis and encephalomyelitis, with worsening headache. There are postsurgical findings related to right frontal approach stereotactic biopsy of the pontine enhancing lesions. There is significant interval improvement in the foci of enhancement within the pons. There are no new enhancing lesions. There are unchanged mild scattered nonspecific punctate foci of T2 hyperintensity in the cerebral white matter. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Interval improvement of the pontine lesions, status post biopsy.