title: Intracranial meningioma causing partial amaurosis in a cat.
abstract: OBJECTIVE
  To describe a case of intracranial meningioma causing visual impairment in a cat, successfully treated by surgery.
  
  
  METHODS
  An adult neutered male domestic cat was referred with a 10-month history of progressive visual impairment and altered behavior. Investigations included physical, ophthalmologic and neurological examinations as well as hematology, serum biochemistry and CT scan of the head.
  
  
  RESULTS
  The menace response was absent in the left eye and decreased in the right eye. Electroretinograms were normal on both eyes, as was ophthalmic examination, ruling out an ocular cause and allowing a presumptive diagnosis of partial amaurosis due to a post-retinal lesion. CT scan demonstrated a large sessile extra axial mass along the right parietal bone and thickening of the adjacent bone. Cerebrospinal fluid was not collected because high intracranial pressure represented a risk for brain herniation. A right rostrotentorial craniectomy was performed to remove the tumor. Ten days after surgery, vision was improved, neurological examination was normal and normal behavior was restored. Ten months after surgery, ophthalmological examination showed no visual deficit and CT scan did not reveal any sign of recurrence.
  
  
  CONCLUSIONS
  Advanced imaging techniques allow veterinarians to detect early cerebral diseases and to provide specific treatment when it is possible. In cases of feline amaurosis due to intracranial meningioma, the vital prognosis is good while the visual prognosis is more uncertain, but recovery of normal vision and normal behavior is possible as demonstrated in the present case.
authors.affiliation: Clinique Vétérinaire Aquivet, Parc d'Activités Mermoz, 19 avenue de la Forêt - 33320 Eysines, France. f.goulle@aquivet.fr
authors.forename: Frédéric
authors.initials: F
authors.lastname: Goulle
authors.forename: Frédéric
authors.initials: F
authors.lastname: Meige
authors.forename: Franck
authors.initials: F
authors.lastname: Durieux
authors.forename: Christophe
authors.initials: C
authors.lastname: Malet
authors.forename: Olivier
authors.initials: O
authors.lastname: Toulza
authors.forename: Pierre-François
authors.initials: PF
authors.lastname: Isard
authors.forename: Robert L
authors.initials: RL
authors.lastname: Peiffer
authors.forename: Thomas
authors.initials: T
authors.lastname: Dulaurent
mesh_terms: D000818:Animals; D001766:Blindness / Q000209:etiology / Q000473:pathology / Q000503:physiopathology / Q000662:veterinary*; D002371:Cat Diseases / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D002415:Cats; D008297:Male; D008577:Meningeal Neoplasms / Q000150:complications / Q000473:pathology / Q000503:physiopathology / Q000601:surgery / Q000662:veterinary*; D008579:Meningioma / Q000150:complications / Q000473:pathology / Q000503:physiopathology / Q000601:surgery / Q000662:veterinary*; D014057:Tomography, X-Ray Computed / Q000662:veterinary