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Case Reports
. 2003 Sep;6(3):269-72.
doi: 10.1046/j.1463-5224.2003.00298.x.

Intravascular papillary endothelial hyperplasia of the conjunctiva in a horse

Héctor Daniel Herrera  1 , Adriana Graciela Duchene, J Oscar Croxatto, Nora Burgués, Hugo Amusquibar
Affiliations
Case Reports

Intravascular papillary endothelial hyperplasia of the conjunctiva in a horse

Héctor Daniel Herrera et al. Vet Ophthalmol. 2003 Sep.

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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