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Transsphenoidal surgery
Pronunciation
Definition 1
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. (NCI Dictionary)
Definition 2
A type of surgery in which instruments are inserted into part of the brain by going through the nose and the sphenoid bone (a butterfly-shaped bone at the base of the skull). Transsphenoidal surgery is used to remove tumors of the pituitary gland. (NCI Dictionary)
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