 The ventricles and sulci are prominent, consistent mild global volume loss slightly greater than expected for the patient's stated age. The cisterns remain patent. There is no midline shift or mass effect. There is a single focus of nonspecific T2/FLAIR hyperintensity within the left frontal subcortical white matter. There are no areas of pathological enhancement. There is no diffusion abnormality. No extra-axial fluid collection is identified.Normal flow-voids are demonstrated in the major intracranial vascular structures. The midline structures and craniocervical junction are within normal limits. There is mild mucosal thickening within the sphenoid sinuses and ethmoid air cells bilaterally.LUMBAR SPINE
1. Single nonenhancing nonspecific focus of T2/FLAIR hyperintensity in the left frontal subcortical white matter.2. Global volume loss greater than expected for the patient's stated age.3. Postoperative changes at L4-L5 from previous left-sided laminectomy. Mild lower lumbar spondylotic changes without significant stenosis at any level.