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NCI Dictionary of Cancer Terms


transsphenoidal surgery  listen  (TRANS-sfee-NOY-dul SER-juh-ree)

  A type of surgery in which instruments are inserted through the nose and sphenoid sinus (a hollow space in a bone in the nose) to remove tumors that are in or near the pituitary gland. The pituitary gland is a pea-sized organ that lies at the base of the brain above the back of the nose.

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Transsphenoidal surgery; drawing shows an endoscope and a curette inserted through the nose and sphenoid sinus to remove cancer from the pituitary gland. The sphenoid bone is also shown.