title: Transsphenoidal hypophysectomy in the dog. A new technique.
abstract: A technique for localizing the canine hypophysis regardless of the shape or size of a dog's skull was evaluated. Using known anatomic landmarks, the approximate location of the hypophysis was estimated, and three small self-threading screws were placed as radiographic markers in the exposed sphenoid bone. A cranial sinus venogram was performed and the hypophysis was outlined by the contrast-filled cavernous sinus. A circular ostectomy was centered over the hypophysis, using the previously placed screws as reference points. The technique was evaluated in eight dogs in a nonsurvival procedure. In seven dogs, hypophysectomy was complete and the ostectomy sites were centered precisely over the hypophysis.
authors.affiliation: Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia.
authors.forename: G W
authors.initials: GW
authors.lastname: Niebauer
authors.forename: S M
authors.initials: SM
authors.lastname: Evans
mesh_terms: D000818:Animals; D003392:Cranial Sinuses / Q000000981:diagnostic imaging; D004285:Dogs / Q000601:surgery*; D007016:Hypophysectomy / Q000379:methods / Q000662:veterinary*; D010027:Osteotomy / Q000662:veterinary; D010902:Pituitary Gland / Q000033:anatomy & histology; D011859:Radiography; D013100:Sphenoid Bone