Neurofibroma

What it is

A rare benign peripheral nerve sheath tumor characterized by a well-demarcated intraneural or diffusely infiltrative extraneural space-occupying lesion consisting of Schwann cells, perineurial-like cells, and fibroblasts. It presents as a cutaneous nodule, a circumscribed mass in a peripheral nerve, a plexiform enlargement of a major nerve trunk, or with diffuse but localized involvement of skin and subcutaneous tissue. Multiple neurofibromas are typically associated with neurofibromatosis 1. Malignant transformation occurs almost exclusively in plexiform neurofibromas and neurofibromas of major nerves.

Key facts

Age of onset

Adult

Classified as

Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references