Transsphenoidal surgery

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Transsphenoidal surgery is a type of surgery in which surgical 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.

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 This article incorporates public domain material from the U.S. National Cancer Institute document "Dictionary of Cancer Terms".