Autoimmune thyroiditis and epilepsy. There is persistent, albeit slightly reduced diffuse cortical and subcortical swelling and high T2 signal with associated mild gyriform enhancement involving the left posterior temporal, parietal, and occipital lobes. There may be slightly reduced diffusivity in the cortex in some of the affected areas. Patchy areas of high T2 signal in the right cerebellar hemisphere have subsided. There is persistent patchy high T2 signal in the pons bilaterally. The left thalamus lesion appears to have resolved. There is slightly less mass effect upon the left lateral ventricle and no significant midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Overall slight improvement of the edema involving the left posterior temporal, parietal, and occipital lobes. Furthermore, patchy areas of edema in the right cerebellar hemisphere have subsided and the left thalamus lesion appears to have resolved, which may have been related to seizure activity superimposed upon autoimmune encephalopathy. The nonspecific patchy high T2 signal in the pons bilaterally otherwise persists.