Vestibular epilepsy associated with a temporoparietal lobe meningioma in a cat.

Abstract

A 15-year-old male castrated domestic shorthair cat presented with increasingly frequent vestibular episodes. The cat exhibited episodes of a head tilt, nystagmus, abnormal mental state, vocalizing, hypersalivation, restlessness, and vomiting. Episodes were <60&#x2009;minutes long with normal inter-episode condition. Systemic evaluations were generally benign. Magnetic resonance imaging documented a small meningioma in the left temporoparietal junction area with no other structural evidence of vestibular system pathologies. The episode frequency decreased with administration of levetiracetam which was discontinued 91&#x2009;days post-craniotomy. The cat had 2 more limited vestibular episodes: 1 at 211&#x2009;days after craniotomy, and the second at 489&#x2009;days after craniotomy. The cat maintained normal inter-episode condition until it was euthanized for unrelated transitional cell carcinoma 907&#x2009;days post-craniotomy.