Thanks for the query,
just a single protruding mass cannot be neurofibromatosis.
There are other conditions with protruding mass as well,
This includes anetoderma
Please meet a dermatologist
for final diagnosis.
You dont need to worry regarding neurofibroma.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.