juvenile pilocytic astrocytoma

Definition / meaning of juvenile pilocytic astrocytoma

A slow-growing type of central nervous system tumor that forms from glial (supportive) tissue of the brain and spinal cord. Juvenile pilocytic astrocytoma usually occurs in children and young adults. It forms in the brain more often than the spinal cord.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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