The upper part of the brain that contains the cerebrum, ventricles (fluid-filled spaces), choroid plexus, hypothalamus, pineal gland, pituitary gland, and optic nerve. Examples of tumors that form in the supratentorium are glioblastomas, pineal region tumors, and ependymomas.
( SOO-pruh-ten-TOR-ee-um )
Source: NCI Dictionary of Cancer Terms
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