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Hyperadrenocorticism in four cats.

W F Immink1, A J van Toor, J H Vos

  • 1Department of Veterinary Pathology, State University Utrecht, The Netherlands.

The Veterinary Quarterly
|January 1, 1992
PubMed
Summary
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This study details four feline hyperadrenocorticism cases, highlighting varied clinical signs and diagnostic challenges. Early identification and diagnostic testing are crucial for managing this complex endocrine disorder in cats.

Area of Science:

  • Veterinary Medicine
  • Endocrinology
  • Comparative Pathology

Background:

  • Feline hyperadrenocorticism (hyperadrenocorticism) is a rare endocrine disorder.
  • It is often misdiagnosed as diabetes mellitus due to overlapping clinical signs.
  • This paper presents four distinct feline cases to illustrate diagnostic complexities.

Observation:

  • Case 1: Polydipsia, polyphagia, insulin resistance, and a pituitary chromophobe adenoma.
  • Case 2: Diabetes mellitus, poor coat, pendulous abdomen, pituitary tumor, and adrenal hyperplasia.
  • Case 3: Muscle weakness, alopecia, abscesses, and an adrenocortical carcinoma.
  • Case 4: Polydipsia, nephritis, polyphagia, and a palpable adrenal mass.

Findings:

  • Hyperadrenocorticism was diagnosed in all four cats using various dexamethasone suppression tests.

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  • Pathological findings included pituitary adenomas, adrenal hyperplasia, and an adrenocortical carcinoma.
  • Insulin resistance and initial misdiagnosis as diabetes mellitus were noted in some cases.

    • Implications:

    • This study underscores the importance of considering hyperadrenocorticism in cats with apparent diabetes mellitus or non-specific clinical signs.
    • Diagnostic challenges and varied presentations necessitate thorough endocrine testing.
    • Understanding these diverse presentations aids in earlier and more accurate diagnosis and treatment of feline hyperadrenocorticism.