title: Imaging diagnosis: pituitary apoplexy in a cat.
abstract: A 7-year-old male neutered domestic short-haired cat had depression for 5 months and acute blindness. A lesion at the level of the rostral and middle cranial fossae was suspected. A large pituitary mass compressing the optic chiasm was detected in magnetic resonance images and there was also evidence of recent intratumoral hemorrhage, leading to a diagnosis of pituitary apoplexy; these findings were confirmed at postmortem examination. Pituitary apoplexy is a clinical syndrome characterized by acute neurologic signs related to hemorrhagic infarction within a pituitary tumor. Pituitary apoplexy should be considered in patients with acute onset of blindness and altered mental status.
authors.affiliation: Centre for Small Animal Studies, Animal Health Trust, Newmarket, Suffolk, UK. elsa.beltran@aht.org.uk
authors.forename: Elsa
authors.initials: E
authors.lastname: Beltran
authors.forename: Ruth
authors.initials: R
authors.lastname: Dennis
authors.forename: Alastair
authors.initials: A
authors.lastname: Foote
authors.forename: Luisa
authors.initials: L
authors.lastname: De Risio
authors.forename: Lara
authors.initials: L
authors.lastname: Matiasek
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000175:diagnosis*; D002415:Cats; D008279:Magnetic Resonance Imaging / Q000662:veterinary*; D008297:Male; D010899:Pituitary Apoplexy / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*; D010902:Pituitary Gland / Q000473:pathology*; D010911:Pituitary Neoplasms / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*