History of optic neuritis: visual decline. Orbits: There is diffuse high T2 signal involving the intraorbital, canalicular, and cisternal segments of the left optic nerve. There is also enlacement along the cisternal segment of the left optic nerve. The right optic nerve is intact. There are bilateral lens implants. The bilateral globes and ocular adnexa are otherwise unremarkable. There is no evidence of intraorbital mass lesions.Brain: There is no evidence of intracranial hemorrhage or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. There is a 10 mm diameter pineal gland cyst. 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. The skull, mastoid air cells, and scalp soft tissues are grossly unremarkable. There is mild mucosal thickening in the bilateral frontal and ethmoid sinuses.
1. Findings compatible with left optic neuritis.2. No evidence of acute intracranial hemorrhage or acute infarct.