Condutas cirúrgicas na resolução da hiperplasia mamária felina: relato de dois casos

Abstract

Feline mammary hyperplasia (FMH) corresponds to a hormone-dependent disease related to the stimulation of endogenous progesterone in the first estrous cycles or with the use of synthetic progestogens. Despite being a benign condition, its clinical presentation implies the need for interventions. FMH affects females and males exposed to these hormonal stimuli, promoting the rapid growth of one or more mammary glands, which may cause edema, ulceration, necrosis, even though systemic clinical signs may also be associated. The present study aims to report two cases of benign mammary hyperplasia in two young cats, both with a history of administration of synthetic progestogens, and the different resolutive approaches adopted. In the first case, the patient had a marked increase in all breasts, but without ulcerations or necrosis points. Its prognosis was considered favorable and ovariohysterectomy (OH) surgery was suggested. In the second case, the patient had extremely large mammary chains, ulcerated areas with the presence of purulent secretion and necrotic tissue, with a poor prognosis. The patient had already been submitted to OH, but without success in mammary involution. Therefore, having a radical bilateral mastectomy surgery was the most effective resolution. The screened patients responded positively to their respective treatments. Thus, OH and mastectomy are surgical procedures that can be used, isolated, or associated, in the resolution of feline mammary hyperplasia.