Evaluate left meningeal enhancement. History of seizure. There is decreased FLAIR hyperintensity and leptomeningeal enhancement involving predominantly the left frontal and parietal sulci. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. 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. There are retention cysts within the maxillary sinuses bilaterally. The orbits, skull, and scalp soft tissues are grossly unremarkable.
Improving leptomeningeal disease involving predominantly the left frontal and parietal sulci and to a lesser degree right sided counterparts. Differential diagnoses include meningitis and meningoencephalitis.