NF1 affects the peripheral nervous system and is the most common. The gene is located on chromosome 22. Since the medical management for each form of NF is so different, it is important to have a clear differentiation between NF1 and NF2. In general, preservation of hearing is not as good with NF2 patients as with patients with non-NF2 lesions. We do not understand the difference.
Protons are better for larger and more complicated shaped abnormalities of the brain.
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