Ovarian and intestinal angiomatosis in a horse.

Summary

# Editorial Summary: Ovarian and Intestinal Angiomatosis in an Equine Case A 21-year-old Thoroughbred mare presented with severe lameness requiring euthanasia, during which gross pathological examination revealed multiple red, raised nodules distributed across the serosal surfaces of the small intestine and both ovaries. Histological analysis identified these lesions as benign vascular proliferations containing numerous blood-filled vessel profiles and fibrin thrombi, leading to a diagnosis of angiomatosis—a condition not previously documented in equine small intestinal or ovarian tissue. Angiomatosis represents an abnormal proliferation of blood vessels forming discrete masses, which in this case appeared as incidental findings unrelated to the primary presenting complaint. Whilst the clinical significance of this particular case remains unclear owing to its chance discovery, practitioners should be aware that gastrointestinal and reproductive tract vascular abnormalities may occur in horses and could potentially contribute to colic, haemorrhage, or reproductive dysfunction in other instances. This case report establishes the baseline documentation of equine angiomatosis in these tissues and suggests that further investigation into the prevalence and clinical consequences of such lesions would be beneficial for understanding whether these vascular proliferations warrant therapeutic intervention or represent benign incidental findings.

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Key Findings

• •First reported case of concurrent small intestinal and ovarian angiomatosis in a horse
• •Multiple red, raised nodules with benign vascular channels and fibrin thrombi found on serosal surfaces of small intestine and both ovaries
• •Angiomatosis discovered as incidental finding in a 21-year-old Thoroughbred mare euthanatized for lameness

Conditions Studied