title: Imaging diagnosis--polioencephalomalacia in a calf.
abstract: A 2-month-old mix-breed calf developed acute blindness and ataxia. Serum thiamine concentration was deficient. In antemortem magnetic resonance imaging there were laminar T2-hyperintense regions extending along the cerebral cortex that primarily affected the gray matter. The lesions were relatively symmetric between the left and right hemispheres but no abnormalities were present at the frontal lobes. At necropsy, laminar autofluorescence of the cerebral cortex was observed under ultraviolet exposure at 365 nm, consistent with a diagnosis of polioencephalomalacia. Polioencephalomalacia in the bovine species is compared with that in other species, namely humans, dogs, and cats.
authors.affiliation: Nippon Zenyaku Kogyo Co. Ltd., Fukushima, Japan. tsuka@muses.tottori-u.ac.jp
authors.forename: Takeshi
authors.initials: T
authors.lastname: Tsuka
authors.forename: Yasuho
authors.initials: Y
authors.lastname: Taura
authors.forename: Shingo
authors.initials: S
authors.lastname: Okamura
authors.forename: Hidenori
authors.initials: H
authors.lastname: Tamura
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Okamoto
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Okamura
authors.forename: Saburo
authors.initials: S
authors.lastname: Minami
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D004678:Encephalomalacia / Q000175:diagnosis / Q000503:physiopathology / Q000662:veterinary*; D005260:Female; D008279:Magnetic Resonance Imaging; D013832:Thiamine Deficiency / Q000097:blood / Q000150:complications / Q000662:veterinary*