NF1 and frequent headaches and plexiform of left eyelid and orbit. Orbit: There is an infiltrative and enhancing left preseptal and postseptal mass, which does not appear to have significantly changed. There is mild mass effect upon the other left intraorbital structures. The left optic nerve is intact. The right orbits is unremarkable.Brain: There are new T2 hyperintense lesions in the anterior and posterior portions the corpus callosum, eccentric to the left, as well as a new T2 hyperintense lesion in the right cerebellar hemisphere white matter. Otherwise, many of the supratentorial and infratentorial T2 hyperintense lesions are unchanged. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is no abnormal intracranial enhancement. 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, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1. New bright spots related to neurofibromatosis type 1 in the anterior and posterior portions the corpus callosum, eccentric to the left, as well as a new bright spot in the right cerebellar hemisphere white matter. Otherwise, many of the supratentorial and infratentorial T2 hyperintense lesions are unchanged. 2. The left preseptal and postseptal plexiform neurofibroma has not significantly changed.