Clinical and Diagnostic Imaging Features of Brain Herniation in Dogs and Cats

• DOI: 10.1111/jvim.14526
• Publication Date: 2016-09-12T05:52:54Z
• Authors: M.J. Lewis; N.J. Olby; P.J. Early; C.L. Mariani; K.R. Muñana; G.S. Seiler; E.H. Griffith
• Keywords: Brain herniation

Quantification of brain herniation on MRI and its immediate clinical implications are poorly described.Define the normal position caudal fossa structures MRIs in dogs cats utilizing morphometry, compare this to with transtentorial (CTH), foramen magnum (FMH) or both identified MRI, investigate associations between severity, signs, 24-hour outcome.Ninety-two controls (66 dogs, 26 cats), 119 cases (88 31 cats).Retrospective case series. The database was searched for anatomy herniation. Morphometry established TTX (transtentorial rostroventral cerebellum) quantify CTH FMX (caudoventral cerebellum magnum) FMH. Measurements were compared controls. Correlations specific variables outcome investigated.Measurements medium/large control versus small dog cat significantly different (P < .001, TTX: -0.46, -0.305, -0.3, FMX: 0.695, 0.27, 0.25, respectively). 119/1564 (7.6%) that underwent imaging had FMH .001). 67/89 (75%) supratentorial lesions no signs directly attributable 71/119 (60%) a anesthetic recovery. associated survival .001).Brain can be quantified MRI. Clinical commonly absent, more severe based is worse short-term outcome.