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Pathology in Practice

Lauren E. Himmel DVM, PhD1, Rachel B. Song VMD, MS2, Ronaldo C. da Costa DMV, PhD3, and Michael J. Oglesbee DVM, PhD4
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  • 1 Departments of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210.
  • | 2 Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210.
  • | 3 Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210.
  • | 4 Departments of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210.
History

A 15-week-old 14.1-kg (31-lb) male yellow Labrador Retriever was referred to the Neurology and Neurosurgery service at The Ohio State University because of dullness, lethargy, and a right-sided head tilt that progressively worsened over a period of several weeks.

Clinical and Gross Findings

Results of the clinical neurologic examination were consistent with a central vestibular lesion. Abnormalities included dull mentation, intermittent opisthotonic posture and lateral recumbency, absent menace response in both eyes, decreased oculocephalic reflex in both eyes, bilateral decreased nasal sensation, and spontaneous vertical nystagmus in both eyes. Magnetic resonance imaging of the brain revealed a large, well-demarcated,

Contributor Notes

Dr. Himmel's present address is Division of Comparative Medicine, Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232.

Address correspondence to Dr. Himmel (himmel.l4@osu.edu).