Peer-reviewed veterinary case report
Retrobulbar dermoid cyst in a horse: a case report.
- Journal:
- Veterinary ophthalmology
- Year:
- 2007
- Authors:
- Muñoz, E et al.
- Affiliation:
- Veterinary Teaching Hospital · Spain
- Species:
- horse
Plain-English summary
A 4-year-old Andalusian horse was brought in for a check-up after having a swollen right eye for three months, which started after it bumped its head. An ultrasound showed a soft mass behind the eye that was about 5 centimeters wide. The vet took a sample of the fluid from the mass, which didn't show any cells, leading to a diagnosis of a cyst. The cyst was surgically removed, and tests confirmed it was a retrobulbar dermoid cyst, which is a type of growth. Eighteen months later, there have been no signs of the cyst coming back.
Abstract
A 4-year-old Andalusian horse was presented for examination following a 3-month history of exophthalmos of the right eye and a soft swelling of the right supraorbital fossa noted after blunt head trauma. Ultrasonographic examination of the swelling showed an anecogenic mass of 5 cm in diameter involving the retrobulbar space. Centesis of the mass through the supraorbital fossa was performed and yielded a serous fluid with 7.2 g/dL of total protein and density of 1040. No cells were seen in the sample. A tentative diagnosis of cyst was made. The cyst was surgically removed and the definitive histologic diagnosis was retrobulbar dermoid cyst. No recurrence has developed 18 months following the complete removal of the cyst capsule. To the authors' knowledge, there are no previous reports of retrobulbar dermoid cysts in horses. Localization, causes and success of surgical treatment of dermoid cysts are discussed.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/17971003/