Peer-reviewed veterinary case report
Intravascular papillary endothelial hyperplasia of the conjunctiva in a horse.
- Journal:
- Veterinary ophthalmology
- Year:
- 2003
- Authors:
- Herrera, Héctor Daniel et al.
- Affiliation:
- School of Veterinary Sciences
- Species:
- horse
Plain-English summary
A 6-year-old mare had a red growth on the conjunctiva, which is the membrane covering the eye, specifically in her left eye. After a thorough eye examination, the vet removed the mass and examined it under a microscope. The results showed that the growth was a benign (non-cancerous) vascular lesion, meaning it was made up of blood vessels and not cancerous cells. This type of growth is called intravascular papillary endothelial hyperplasia, and it is important to distinguish it from more serious tumors. Overall, the treatment was successful, as the growth was benign and did not indicate any malignancy.
Abstract
OBJECTIVE: Vascular tumors of the conjunctiva in the horse are rare. We present a unique case of an intravascular papillary endothelial hyperplasia of the conjunctiva. ANIMAL STUDIED: Horse. PROCEDURES: Case report. A 6-year-old-mare presented with a red mass in the conjunctiva of the left eye. After complete ophthalmologic examination the lesion was excised. The tissue was processed for light microscopy and studied histopathologically. RESULTS: Pathologic examination revealed a nonencapsulated vascular lesion composed of confluent vascular spaces filled by multiple papillary structures composed of a central collagenous core lined by hyperplastic endothelial cells. There was neither atypical endothelial cell nor mitotic activity. CONCLUSIONS: Intravascular papillary endothelial hyperplasia is a benign proliferative lesion that should be differentiated from malignant vascular tumors.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/12950660/