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Primary intraocular primitive neuroectodermal tumor (retinoblastoma) causing unilateral blindness in a gelding
Author(s) -
Knottenbelt Derek C.,
Hetzel Udo,
Roberts Veronica
Publication year - 2007
Publication title -
veterinary ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.594
H-Index - 50
eISSN - 1463-5224
pISSN - 1463-5216
DOI - 10.1111/j.1463-5224.2007.00567.x
Subject(s) - retinoblastoma , blindness , medicine , ophthalmology , anatomy , biology , optometry , genetics , gene
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.