THE STATISTICS OF MAMMARY GLAND NEOPLASIA IN CATS IN THE CITY OF BARNAUL
Mammary neoplasms are one of the most common pathologies in cats. Tumor growth is based on unlimited uncontrolled by the body multiplication of cells which leads to dysfunction and destruction of tissues of vital organs. The spread of malignant histological types is great. Despite significant advances in the diagnosis, treatment and prevention of tumor diseases, the number of cancer animals is growing. The goal of this study was to analyze the pathologies of the mammary glands in cats based on the results of histological studies at the AlfaVet veterinary clinic in the City of Barnaul. The research target was the histology study record book of the AlfaVet veterinary clinic from June 2020 through March 2021. During this time period, mammary gland histologic examinations were performed in 23 domestic cats from the City of Barnaul. All animals were divided into age and sex groups . The group of 1-2 year-old animals had benign neoplasms, namely fibroadenoma, and malignant ones as intraductal carcinoma. The group of 2-5 year-old animals - malignant papillary carcinoma. The group of 5-8 year-old animals - intraductal papilloma, ductal carcinoma. The group of 8-10 year-old - benign formations characterizing epithelial dysplasia; and malignant - invasive ductal carcinoma. The group of 10-12 year-old animals - adenoma and invasive ductal carcinoma. The group of 12-14 year-olds and older - a significant increase in pathologies: breast adenoma, lobar ductal fibroadenoma, intraductal papilloma, invasive ductal carcinoma. The research method was the analysis and statistical processing of the results. It was found that of the neoplasms in cats, 59% accounted for mammary gland pathologies, benign and malignant tumors of the mammary glands were found in cats of all sex and age groups. Among them, 88% were diagnosed in female cats (53% of malignant tumors), 12% in male cats (50% of malignant tumors); 53% were malignant tumors as invasive carcinomas, and 47% were benign tumors (adenomas, fibroadenomas, papillomas).