Peer-reviewed veterinary case report
Foal with eye problems - what is choristoma?
By Morgan, Jasmine et al.·Published in Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·2025·Department of Biomedical Sciences and Pathobiology, United States·View original on PubMed →
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Original publication title: Bilateral intraocular choristoma in a 2-day-old foal.
- Species:
- horse
Plain-English summary
A 2-day-old Warmblood colt was examined after passing away and was found to have several eye problems. During the autopsy, the veterinarians discovered unusual growths in the front part of the eyes, which are known as choristomas (abnormal tissue growths). These types of growths are rare in horses and in this case, they seemed to indicate that the cornea (the clear front part of the eye) was not developing properly. Unfortunately, the outcome was not positive, as the foal did not survive.
Abstract
A 2-d-old Warmblood colt was submitted for autopsy with a spectrum of bilateral ocular abnormalities. At postmortem examination, a constellation of lesions within the anterior segment included retention of ectodermal elements, compatible with choristoma. Ocular choristomas can be localized to different intraocular structures and are rare in equids. The morphologic features in our case were suggestive of abnormal corneal differentiation.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40070042/