NF1 with history of brainstem tumor and cerebellar tumor that may be growing slightly, followed at CHOP. There is a T2 hyperintense lesion in the left hippocampus that measures up to 10 mm and a T2 hyperintense lesion in the left medial cerebellar hemisphere that measures up to 6 mm. The brainstem and optic apparatus appear to be unremarkable. There is no evidence of intracranial hemorrhage or acute infarct. There is no abnormal intracranial enhancement. The right lateral ventricle is slightly larger than the left lateral ventricle. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and mastoid air cells are grossly unremarkable. There are a few small enhancing scalp nodules. There is a partially imaged infiltrative and enhancing oral cavity mass.
1. The T2 hyperintense lesion in the left hippocampus that measures up to 10 mm and a T2 hyperintense lesion in the left medial cerebellar hemisphere that measures up to 6 mm are likely stigmata of neurofibromatosis type 1. The brainstem and optic apparatus appear to be unremarkable.2. A few small scalp nodules likely represent cutaneous neurofibromas.3. A partially imaged infiltrative oral cavity mass may represent a plexiform neurofibroma. Dedicated imaging of this region may be useful for further evaluation.