ependymal tumor

Definition of ependymal tumor
National Cancer Institute

ependymal tumor

(eh-PEN-dih-mul TOO-mer)
A type of brain tumor that begins in cells lining the spinal cord central canal (fluid-filled space down the center) or the ventricles (fluid-filled spaces of the brain). Ependymal tumors may also form in the choroid plexus (tissue in the ventricles that makes cerebrospinal fluid). Also called ependymoma.

Source: NCI Dictionary of Cancer Terms