Nerve sheath tumor

Nerve sheath tumor
Classification and external resources
ICD-O	9540-9570^[1]
MeSH	D018317

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.

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.^[2]

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

References

Sellar:	Craniopharyngioma Pituicytoma

Other:	Pinealoma

Astrocyte	Astrocytoma Pilocytic astrocytoma Pleomorphic xanthoastrocytoma Subependymal giant cell astrocytoma Fibrillary astrocytoma Anaplastic astrocytoma Glioblastoma multiforme

Oligodendrocyte	Oligodendroglioma

Ependyma	Ependymoma Subependymoma

Choroid plexus	Choroid plexus tumor Choroid plexus papilloma Choroid plexus carcinoma

Multiple/unknown	Oligoastrocytoma Gliomatosis cerebri Gliosarcoma

Mature
neuron

Primitive

Meningiomas
(Meninges)

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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