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Pituitary-dependent hyperadrenocorticism in a cat
Authors:M E Peterson  P Steele
Abstract:Pituitary-dependent hyperadrenocorticism was diagnosed in a 9-year-old, male castrated cat that had polyuria, polyphagia, pendulous abdomen, truncal hair loss, congestive heart failure, and insulin-resistant diabetes mellitus. Results of pituitary-adrenal function testing revealed inadequate serum cortisol suppression following dexamethasone administration, exaggerated serum cortisol responses after exogenous ACTH stimulation, and high plasma ACTH concentrations. The pathologic findings of bilateral adrenocortical hyperplasia and a pituitary adenoma that immunostained well for ACTH-related peptides confirmed pituitary-dependent hyperadrenocorticism.
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