NF-1 and precocious puberty needing to evaluate for tumor. Brain: There is mild high T2 signal and enhancement of the cisternal and canalicular portions of the left optic nerve, without significant expansion of the nerve. There is an arachnoid cyst in the anterior left middle cranial fossa that measures up to 18 mm in thickness. There is flattening of the adjacent left anterior temporal pole. There is a punctate focus of high T2 signal in the right globus pallidus. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The pituitary appears to be 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. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is mild scattered paranasal sinus mucosal thickening.Orbit: The bilateral intraorbital optic nerves are intact. The bilateral globes and ocular adnexa are unremarkable. There is no evidence of abnormal intraorbital enhancement or mass lesions.
1. Probable small glioma of the cisternal and canalicular portions of the left optic nerve.2. Arachnoid cyst in the anterior left middle cranial fossa. 3. A punctate focus of high T2 signal in the right globus pallidus likely represents stigmata of neurofibromatosis type 1.