# title
Ossifying fibroma as a cause of blindness in a 5-year-old Quarter Horse gelding

# abstract
<jats:title>Summary</jats:title><jats:p>A 5yearold Quarter Horse gelding presented to Texas A&M University Veterinary Medical Teaching Hospital with a several week history of bilateral blindness. Neurological deficits included an absent menace response and severe atrophy of the optic nerve head in the left eye (<jats:styled-content style="fixed-case">OS</jats:styled-content>) as well as decreased vision in the right eye (<jats:styled-content style="fixed-case">OD</jats:styled-content>). Advanced imaging consisting of computed tomography (<jats:styled-content style="fixed-case">CT</jats:styled-content>) and magnetic resonance imaging (<jats:styled-content style="fixed-case">MRI</jats:styled-content>) confirmed a large mass in the base of the skull invading the sinuses and asymmetrically compressing the optic nerves rostral to the optic chiasm. Due to the size and location of the mass as well as severity of associated neurological signs, humane euthanasia was elected. Necropsy examination identified a large mass effacing the sphenopalatine sinuses and compressing the optic nerves. Histologically, the mass was identified as an ossifying fibroma (<jats:styled-content style="fixed-case">OF</jats:styled-content>) and degeneration of the optic nerves was confirmed. As an <jats:styled-content style="fixed-case">OF</jats:styled-content> in this location has never been described in a horse, this case demonstrates a new differential for blindness in horses.</jats:p>

# authors[].organizations[].label
College of Veterinary Medicine and Biomedical Sciences

# authors[].organizations[].label
College of Veterinary Medicine and Biomedical Sciences

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# authorList[]
Madrigal, R. G., Friedemann, M. C., Vallone, J. M., Ruoff, C. M., Vallone, L. V., Laughrey, T., Rech, R. R., & Coleman, M. C.