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Persistent Bilateral Mydriasis Associated With a Pituitary Adenoma in a Horse
- Source :
- Journal of equine veterinary science. 85
- Publication Year :
- 2019
-
Abstract
- Severe bilateral mydriasis and bilaterally decreased vision were observed in a 23-year-old crossbred warmblood gelding with a history of pituitary pars intermedia dysfunction. Ten years after the onset of clinical signs, it was killed humanely because of worsening of clinical signs and loss of therapeutic responsiveness. Postmortem examination of the head was performed to confirm the suspected pituitary neoplasm and to investigate secondary oculomotor lesions. Pathomorphologic examination revealed an expansile space-occupying pituitary adenoma and degenerative changes in the preganglionic oculomotor nerve, ciliary ganglion, and optic chiasm. The ocular clinical findings share features of a cavernous sinus syndrome.
- Subjects :
- Adenoma
Male
Pathology
medicine.medical_specialty
genetic structures
040301 veterinary sciences
Pituitary Diseases
Optic chiasm
Pituitary neoplasm
0403 veterinary science
Oculomotor Nerve
Pituitary adenoma
medicine
Pituitary pars intermedia dysfunction
Mydriasis
Animals
Pituitary Neoplasms
Horses
Equine
business.industry
Oculomotor nerve
0402 animal and dairy science
Ciliary ganglion
04 agricultural and veterinary sciences
medicine.disease
040201 dairy & animal science
medicine.anatomical_structure
Warmblood
Horse Diseases
sense organs
medicine.symptom
business
Subjects
Details
- ISSN :
- 07370806
- Volume :
- 85
- Database :
- OpenAIRE
- Journal :
- Journal of equine veterinary science
- Accession number :
- edsair.doi.dedup.....cbe5accf6db3d85d0af8653af1a6f398