From the case:
Neurofibromatosis type 1
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There is a plexiform neurofibroma involving the left side of the neck, scalp, and the submental/submandibular region. Note the multiple high T2 and FLAIR hyperintensity foci in the dentate nuclei, middle cerebellar peduncle, pons, midbrain, cerebral peduncles, and the basal ganglia.
Case Discussion
There is a plexiform neurofibroma (pathognomonic for NF1) involving the left side of the neck, scalp, and the submental/submandibular region. Note the multiple high T2 and FLAIR hyperintensity foci in the dentate nuclei, middle cerebellar peduncle, pons, midbrain, cerebral peduncles, and the basal ganglia.