Left arm, leg, eye twitching in setting of fever. There is a right choroid fissure cystic lesion that measures up to 15 mm, with compression of the hippocampus and mild surrounding T2 hyperintensity. There are small patchy areas of T2 hyperintensity in the bilateral periventricular regions, particularly in the parietal lobes, which may represent terminal zones of myelination. The ventricles are not enlarged. There is no evidence of intracranial hemorrhage or acute infarct. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Findings compatible with a right choroid fissure arachnoid cyst with compression of the hippocampus. Nevertheless, follow up via MRI with contrast may be useful for further characterization.