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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



papilledema  listen  (PA-pil-eh-DEE-muh)

  Swelling around the optic disk, the area where the optic nerve (the nerve that carries messages from the eye to the brain) enters the eyeball. Papilledema occurs when increased brain pressure caused by tumors or other problems results in swelling of the optic nerve.