Peer-reviewed veterinary case report
Primary intraocular primitive neuroectodermal tumor (retinoblastoma) causing unilateral blindness in a gelding.
- Journal:
- Veterinary ophthalmology
- Year:
- 2007
- Authors:
- Knottenbelt, Derek C et al.
- Affiliation:
- Philip Leverhulme Equine Hospital · United Kingdom
- Species:
- horse
Plain-English summary
A 14-year-old gray gelding was brought in because there was a noticeable pale mass in his right eye, which was causing blindness. Tests showed that this mass was located in the eye and was taking up a lot of space inside it. After surgery to remove the eye, the mass was found to be a rare type of tumor called a retinoblastoma, which is a type of cancer that can occur in the eye. After a brief recovery, the gelding was able to return to his normal activities.
Abstract
A 14-year-old gray gelding was presented for investigation of a visible, pale-colored ocular mass in the right eye. An intraocular mass was identified clinically and ultrasonographically as originating from the superior nasal quadrant of the ciliary body and retina. The mass occupied the majority of the vitreous chamber and some of the superior anterior chamber of the eye. The affected eye was blind. Following exenteration, a primary intraocular primitive neuroectodermal tumor (i.e. a retinoblastoma/medulloepithelioma), a rarely described intraocular mass in adult horses, was identified by pathologic examination. The gelding returned to normal use following a short recovery period.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/17970995/