Neoplasia mamária em cadelas: análise histopatológica e etária de estudo retrospectivo em clínica-escola

Resumo (EN)

Objective – To retrospectively analyze suspected cases of mammary neoplasia in female dogs seen at the UNIP Veterinary Clinic, São José dos Campos campus, over a five-year period, with emphasis on confirmed histopathological types and age distribution of the patients. Methods – A total of 1,439 medical records were reviewed, of which 161 recorded suspected neoplasia, 108 of which involved the mammary gland. Histopathological examination was performed in 31 of these dogs, categorizing the diagnoses (carcinoma, adenocarcinoma, etc.) and stratifying ages into ≤ 12 months, 1–5 years, and > 5 years. Results – Of the 108 suspected cases, 31 (28.7%) were histopathologically confirmed, with carcinoma (11/31; 35.5 %) and adenocarcinoma (10/31; 32.3 %) predominating. The > 5 years age group accounted for 83.9 % of confirmed diagnoses. Conclusions – There is a strong association between advanced age (> 5 years) and occurrence of mammary neoplasia, with a predominance of malignant epithelial tumors, reinforcing the importance of early diagnosis and adoption of preventive spaying protocols.