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Suspected pituitary apoplexy in a German shorthaired pointer
S N Long1, A Michieletto, T J Anderson
1Department of Veterinary Clinical Studies, University of Glasgow Veterinary School, Bearsden Road, Bearsden, Glasgow G61 1QH.
The Journal of Small Animal Practice
|November 26, 2003
Summary
Pituitary apoplexy, a human syndrome, was observed in a dog with a pituitary macroadenoma. Hemorrhage caused neurological signs similar to human cases.
Area of Science:
- Veterinary Neurology
- Endocrinology
- Comparative Pathology
Background:
- Pituitary apoplexy is a rare clinical syndrome in humans.
- It involves acute hemorrhage or infarction of the pituitary gland, often associated with pituitary tumors.
- This condition can lead to severe neurological deficits and hormonal imbalances.
Observation:
- This report details a canine case presenting with vomiting, visual disturbances, seizures, altered consciousness, and diencephalic dysfunction.
- These clinical signs were linked to hemorrhage originating from a pituitary macroadenoma.
- The hemorrhage caused intraventricular hemorrhage, leading to increased intracranial pressure.
Findings:
- The observed clinical signs and pathological findings in the dog closely resemble human pituitary apoplexy.
- The hemorrhage disrupted critical brain structures, including the hypothalamus and brainstem.
- This suggests a shared pathophysiology between canine and human pituitary apoplexy.
Implications:
- This case expands the understanding of pituitary apoplexy beyond human medicine.
- It highlights the importance of considering pituitary macroadenomas in dogs presenting with similar neurological signs.
- Further comparative studies may elucidate shared mechanisms and inform diagnostic and therapeutic strategies for pituitary apoplexy in both species.