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Adenoma de hipófise em uma gata com hiperadrenocorticismo

Barão Corgozinho, Katia; Belchior, Cristiane; Calixto de Souza, Raquel; da Silva Leite, Juliana; Maria Reis Ferreira, Ana.
Acta Sci. vet.; 38(2): 205-208, 2010.
Artigo em Português | VETINDEX-Express | ID: vti-731839

Resumo

Background:  :  :  : Feline Cushings syndrome (FCS) is a disorder of excessive cortisol secretion by the adrenal glands and is rare in cats. The most frequently observed clinical signs are polyuria, polydipsia, and polyphagia which are also consistent with diabetes mellitus. These diabetic cats are often insulin resistants. The dexamethasone suppression test is considered the test of choice for the diagnosis of hyperadrenocorticism. The majority of cats with naturally occurring Cushings syndrome have pituitary-dependent hyperadrenocorticism and it is caused by functional microadenoma or macroadenoma pituitary. Computed tomography or magnetic resonance imaging is helpful in diagnosis of pituitary tumors. Treatments of pituitary-dependent hyperadrenocorticism include surgery of the pituitary or adrenals, radiation of the pituitary, and medical therapies. Bilateral adrenalectomy continues to represent the best long-term therapeutic strategy until hypophysectomy becomes more widely available. This paper reports a cat with macroadenoma pituitary causing hiperadrenocorticism and insulin resistance. Case: A 12-year-old female castrated Brazilian shorthair cat was referred to the veterinary due to polyuria, polydipsia, weight loss and polyphagia. The presence of hyperglycemia (blood glucose >250 mg/dl), glucosuria and elevated fructosamine concentration revealed diabetes mellitus.
Biblioteca responsável: BR68.1