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NCI Dictionary of Cancer Terms


CSF   

  The fluid that flows in and around the hollow spaces of the brain and spinal cord, and between two of the meninges (the thin layers of tissue that cover and protect the brain and spinal cord). CSF is made by tissue called the choroid plexus in the ventricles (hollow spaces) in the brain. Also called cerebrospinal fluid.

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Drawing shows cerebrospinal fluid (CSF) in the brain and spinal cord. Also shown are the ventricles in the brain, where CSF is made.