Peer-reviewed veterinary case report
Dog with one-sided bulging eye diagnosed with cavernous sinus
By Tidwell, A S et al.·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·1997·Department of Surgery, United States·View original on PubMed →
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Original publication title: Computed tomography and magnetic resonance imaging of cavernous sinus enlargement in a dog with unilateral exophthalmos.
- Species:
- dog
Plain-English summary
A 5-year-old dog with a history of head trauma developed a bulging eye on one side, known as unilateral exophthalmos. After two years of this symptom, imaging tests like CT and MRI revealed an abnormal mass in the area around the eye, which was caused by an abnormal connection between blood vessels. The dog underwent surgery to remove the affected eye, and 29 months later, the dog showed no signs of any further issues.
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Abstract
Computed tomography (CT), magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) were performed on a dog with a two year history of unilateral exophthalmos occurring two years following head trauma. On CT images, an expansile enhancing mass was present along the right intracranial cavernous sinus and extended through the orbital fissure into the retrobulbar space. With MRI, the structure appeared as a signal void due to the presence of rapidly flowing blood. Gadolinium enhancement of the adjacent brain was not present. A vascular origin of the lesion was confirmed with MRA. Based on the CT and MRI findings, the enlarged cavernous sinus and associated ophthalmic plexus were believed to represent an arterialized aneurysm, most likely the result of traumatic arteriovenous fistulization. Treatment consisted of surgical enucleation. At the time of this report, 29 months later, the dog remains free of clinical signs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/9335094/