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Pheochromocytoma in dogs and cats

Gouvêa, Fernanda Nastri; Pennacchi, Caio Santos; Machado, Luiz Henrique de Araújo; Lourenço, Maria Lúcia Gomes; Branco, Luana de Oliveira; Costa, Paula Barbosa; Crivellenti, Leandro Zuccolotto; Borin-Crivellenti, Sofia.
Vet. Not. (Online); 28(1): 1-10, abr. 2022. tab
Artigo em Inglês | VETINDEX | ID: biblio-1395466


Pheochromocytoma is a functional neoplasm that produces catecholamines, located in the medullary region of the adrenal glands. As it presents nonspeciÀ c signs, scarcity of diagnostic tools and is still associated with concomitant diseases, it may not be easily considered as a differential condition among veterinarians. This is an uncommon neoplasm that usually affects dogs, with medium to advanced age and without racial predilection, being very rare in cats. Clinical manifestations vary according to the effects of catecholamines and/or circulatory impairment due to the local invasion of the tumor into adjacent structures. In this way, systemic arterial hypertension and consequences in target organs such as the central nervous system and kidneys can be observed, in addition to ocular changes. The deÀ nitive diagnosis is given by the histopathological analysis of the excised adrenal gland. However, the increase in the serum concentration of catecholamine metabolites may contribute to the conÀ rmation of the disease. Adrenalectomy is the therapy of choice, but if this is not feasible, α and ß adrenergic blocking drugs should be used. The prognosis varies from reserved to favorable, based on surgical success and the presence of metastases.(AU)
Biblioteca responsável: BR68.1