Evaluate for demyelinating disease: tremors; anxiety. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. There is focal prominence of the subarachnoid space overlying the left anterior temporal pole, which measures up to 9 mm in width. The left lateral ventricle is asymmetrically larger than the right, which can represent a developmental variant. 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.
1. Small left middle cranial fossa arachnoid cyst overlying the left anterior temporal pole.2. The left lateral ventricle is asymmetrically larger than the right, which can represent a developmental variant.3. No evidence of intracranial demyelinating lesions.