Neurilemmoma eMedicine Orthopedics

Description: Neurilemmomas are benign, encapsulated tumors of the nerve sheath. Their cells of origin are thought to be Schwann cells derived from the neural crest. These masses usually arise from the side of a nerve, are well encapsulated, and have a unique histologic pattern.
The benign lesion essentially manifests itself with cosmetic deformity, a palpable mass, and/or symptoms similar to a compressive neuropathy. Neurologic symptoms tend to present late. Symptoms can be vague, and there is an average interval of up to 5 years before the diagnosis is established. Neurilemmoma is the most common neurogenic tumor.
Synonyms and related keywords: neurilemoma, schwannoma, neurinoma, nerve sheath tumor, Schwann cell tumor, neuroschwannoma
Dickey & Floyd 2007