neurofibroma

n. type of tumorous growth on a nerve cell which is usually benign (Pathology)

Neurofibroma is a type of nerve sheath tumor. In contrast to schwannomas - another type of tumor arising from the Schwann cells - neurofibromas incorporate all sorts of cells and structural elements in addition to the Schwann cells.
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Neurofibroma /neu·ro·fi·bro·ma/ a tumor of peripheral nerves due to abnormal proliferation of Schwann cells. neu·ro·fi·bro·ma n. [more]Neurofibroma - Community and Resources

Noun
1. tumor of the fibrous covering of a peripheral nerve
(synonym) neurilemoma
(hypernym) tumor, tumour, neoplasm

A benign tumor that develops from the cells and tissues that cover nerves.