title: Transsphenoidal surgery for tumors of the clivus.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002817:Chordoma / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D012888:Skull Neoplasms / Q000601:surgery*; D013100:Sphenoid Bone