Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Site > Nervous System Neoplasms > Central Nervous System Neoplasms Terms and Definitions

Central Nervous System Neoplasms

Medical Definition:	Benign and malignant neoplastic processes that arise from or secondarily involve the brain, spinal cord, or meninges.
Guide Notes:	GEN or unspecified, prefer specifics; coord IM with histol type of neopl (IM); DF: CNS NEOPL
Also Called:	Central Nervous System Neoplasms, Primary
Previously Indexed:	Brain Neoplasms (1966-1991),Nervous System Neoplasms (1980-1991),Spinal Cord Neoplasms (1966-1991)

Central Nervous System Neoplasms Categories.

	Brain Neoplasms - Neoplasms of the intracranial components of the central nervous system, including the cerebral hemispheres, basal ganglia, hypothalamus, thalamus, brain stem, and cerebellum. Brain neoplasms are subdivided into primary (originating from brain tissue) and secondary (i.e., metastatic) forms. Primary neoplasms are subdivided into benign and malignant forms. In general, brain tumors may also be classified by age of onset, histologic type, or presenting location in the brain.
	Central Nervous System Cysts - Congenital or acquired cysts of the brain, spinal cord, or meninges which may remain stable in size or undergo progressive enlargement.
	Meningeal Neoplasms - Benign and malignant neoplastic processes that arise from or secondarily involve the meningeal coverings of the brain and spinal cord.
	Spinal Cord Neoplasms - Benign and malignant neoplasms which occur within the substance of the spinal cord (intramedullary neoplasms) or in the space between the dura and spinal cord (intradural extramedullary neoplasms). The majority of intramedullary spinal tumors are primary CNS neoplasms including ASTROCYTOMA; EPENDYMOMA; and LIPOMA. Intramedullary neoplasms are often associated with SYRINGOMYELIA. The most frequent histologic types of intradural-extramedullary tumors are MENINGIOMA and NEUROFIBROMA.

Central Nervous System Neoplasms Medical Definitions and Terms

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