Nerve sheath tumor

A nerve sheath tumor is a type of tumor of the nervous system (nervous system neoplasm) which is made up primarily of the myelin surrounding nerves.

Nerve sheath tumor
Specialty	Neurology, oncology

A peripheral nerve sheath tumor (PNST) is a nerve sheath tumor in the peripheral nervous system. Benign peripheral nerve sheath tumors include schwannomas and neurofibromas.[1]

A malignant peripheral nerve sheath tumor (MPNST) is a cancerous peripheral nerve sheath tumor.

References

"Spinal Cord Tumors -- Nerve Sheath Tumors (Schwannomas and Neurofibromas)". Retrieved 2007-08-06.

External links

Classification	D ICD-O: 9540-9570 MeSH: D018317 SNOMED CT: 115242003

Tumours of the nervous system

Sellar:	Craniopharyngioma Pituicytoma
Other:	Pinealoma

Neuroepithelial
(brain tumors,
spinal tumors)

Astrocyte	Astrocytoma Pilocytic astrocytoma Pleomorphic xanthoastrocytoma Subependymal giant cell astrocytoma Fibrillary astrocytoma Anaplastic astrocytoma Glioblastoma multiforme
Oligodendrocyte	Oligodendroglioma Anaplastic oligodendroglioma
Ependyma	Ependymoma Subependymoma
Choroid plexus	Choroid plexus tumor Choroid plexus papilloma Choroid plexus carcinoma
Multiple/unknown	Oligoastrocytoma Gliomatosis cerebri Gliosarcoma

Mature
neuron

Primitive

Medulloepithelioma

Primary central nervous system lymphoma

Nerve sheath tumor
Cranial and paraspinal nerves
- Neurofibroma
- Neurofibromatosis
Neurilemmoma/Schwannoma
- Acoustic neuroma
Malignant peripheral nerve sheath tumor

Other

WHO classification of the tumors of the central nervous system

Note: Not all brain tumors are of nervous tissue, and not all nervous tissue tumors are in the brain (see brain metastasis).

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