Equine orbital angiomatosis

Summary Angiomatosis refers to a vascular tumour consisting of several vascular, blood‐filled cavities with a lining of well‐differentiated endothelial cells. This condition is seen in very young cattle as a malformative process and has been documented in other animals as well. In horses, this disease has only rarely been described, with no reported lesions being found within the equine orbit. This report details the clinical findings, surgical exploration, histopathology, and long‐term follow‐up of an aged horse with orbital angiomatosis.