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Ovarian and Intestinal Angiomatosis in a Horse

Oklahoma Animal Disease Diagnostic Laboratory, Oklahoma State University, Stillwater, OK (CL); Section of Pathology, Department of Biomedical Sciences, The College of Veterinary Medicine, Cornell University, Ithaca, New York (BN)

Abstract

Dozens of red, raised nodules scattered along the serosal surface of the small intestine and the right and left ovaries were observed as incidental findings on gross examination in a 21-year-old Thoroughbred mare euthanatized for severe lameness. Histologically, these nodules were composed of numerous, variably sized, redundant vascular profiles filled with red blood cells and fibrin thrombi. Based on the presence of multiple nodules composed of benign vascular channels scattered within the small intestine and ovary, a diagnosis of angiomatosis is proposed. To the authors' knowledge, this is the first report of small intestinal and ovarian angiomatosis in a horse.

Key words: Angiomatosis; equine; hemangioma; horse; intestine; ovary.

Request reprints from Dr. C. Lamm, Oklahoma Animal Disease Diagnostic Laboratory, Oklahoma State University, PO Box 7001, Stillwater, OK 74076 (USA). E-mail: cathy.lamm{at}okstate.edu