NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,779 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

transsphenoidal surgery
(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.

EnlargeTranssphenoidal 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.

Transsphenoidal surgery. An endoscope and a curette are inserted through the nose and sphenoid sinus to remove cancer from the pituitary gland.