Peer-reviewed veterinary case report
Dilated pupil linked to cerebellar stroke in two dogs
By Danciu, Cecilia-Gabriella et al.·Published in Journal of veterinary internal medicine·2024·Department of Clinical Science and Services, United Kingdom·View original on PubMed →
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Original publication title: Mydriasis associated with ischemic cerebrovascular infarct affecting the ipsilateral cerebellar interposital nucleus in 2 dogs.
- Species:
- dog
Plain-English summary
A 10-year-old male neutered crossbreed and an 8-year-old female neutered greyhound both showed sudden signs of coordination problems and eye issues, including one pupil being larger than the other (mydriasis). After tests, vets found that both dogs had suffered from a stroke affecting a part of the brain responsible for balance and coordination. They received supportive care, and after two weeks, the eye problems improved significantly. Both dogs are now doing better and have recovered from their symptoms.
People also search for: dog sudden coordination problems · dog mydriasis treatment · greyhound stroke symptoms
Abstract
A 10-year-old male neutered crossbreed dog and an 8-year-old female neutered greyhound presented after peracute onset of cerebellar dysfunction. The crossbreed dog had anisocoria with the left pupil being mydriatic, spontaneous conjugate rotatory nystagmus with fast phase to the left and delayed postural reactions on the left side. The greyhound had anisocoria with the left pupil being mydriatic, right positional ventral strabismus, absent menace response in the left eye and postural reaction deficits on the left side. For both dogs, the neuroanatomical localization was left cerebellum with paradoxical vestibular syndrome. Magnetic resonance imaging identified a left cerebellar ischemic territorial infarct of the rostral cerebellar artery, involving the region of the left interposital nucleus. Both dogs were given supportive care and at 2-week follow-up the anisocoria had resolved. Anisocoria with mydriasis can be a clinical sign in dogs with naturally-occurring cerebellar ischemic infarcts in the region of the ipsilateral interposital nucleus.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39198039/