title: Papillary meningioma in the cerebellum of a cat.
abstract: An unusual papillary meningioma in a cat with progressive cerebellar ataxia is described. Computed tomography revealed the presence of a primary tumour. Microscopically, the tumour was seen to arise from the cerebellar pia mater, forming perivascular structures composed of a single layer of cuboidal to columnar epithelial cells. By immunolabelling, the neoplastic cells appeared positive for cytokeratin, vimentin and S-100 protein. Ultrastructural examination, together with the immunocytochemical findings, indicated the mesenchymal and epithelial nature of the tumour.
authors.affiliation: Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, 54006, Greece.
authors.forename: E
authors.initials: E
authors.lastname: Kaldrymidou
authors.forename: Z S
authors.initials: ZS
authors.lastname: Polizopoulou
authors.forename: A F
authors.initials: AF
authors.lastname: Koutinas
authors.forename: N
authors.initials: N
authors.lastname: Papaioannou
authors.forename: G
authors.initials: G
authors.lastname: Papadopoulos
authors.forename: T
authors.initials: T
authors.lastname: Poutahidis
mesh_terms: D000818:Animals; D002415:Cats; D002528:Cerebellar Neoplasms / Q000378:metabolism / Q000473:pathology*; D005260:Female; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis; D008579:Meningioma / Q000378:metabolism / Q000473:pathology*; D009418:S100 Proteins / Q000032:analysis; D014746:Vimentin / Q000032:analysis
chemical_list: D009418:S100 Proteins; D014746:Vimentin; D007633:Keratins