title: Paranasal meningioma in a horse.
abstract: Paranasal meningioma was diagnosed in a 5-year-old Appaloosa gelding. The mass occupied the right maxillary, frontal, and sphenopalatine sinuses but did not invade the calvarium. The diagnosis was based on histologic evaluation, positive immunohistochemical staining for vimentin and cytokeratin, and ultrastructural features including the presence of interdigitating spindle cells with numerous desmosomes.
authors.affiliation: University of Missouri College of Veterinary Medicine, Veterinary Medical Diagnostic Laboratory, Columbia 65211, USA.
authors.forename: John M
authors.initials: JM
authors.lastname: Kreeger
authors.forename: Alison
authors.initials: A
authors.lastname: Templer
authors.forename: Susan E
authors.initials: SE
authors.lastname: Tumquist
authors.forename: Keith L
authors.initials: KL
authors.lastname: Bailey
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Johnson
authors.forename: David A
authors.initials: DA
authors.lastname: Wilson
mesh_terms: D000818:Animals; D006734:Horse Diseases / Q000473:pathology*; D006736:Horses; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis; D008297:Male; D008579:Meningioma / Q000473:pathology / Q000662:veterinary*; D010255:Paranasal Sinus Neoplasms / Q000473:pathology / Q000662:veterinary*; D014746:Vimentin / Q000032:analysis
chemical_list: D014746:Vimentin; D007633:Keratins